
1) Allergen 2) Pollinium 3) Spore 
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https://www.crosswordclues.com/clue/pollen

1) Allergy cause 2) Allergy stimulant 3) Allergy trigger 4) American power pop group 5) Bees eat it 6) Cause of hay fever 7) Cause of some tears 8) Common allergen 9) Floral dispersion 10) Flower fertilizer 11) Flower powder 12) Grains from anthers 13) Hay fever cause 14) Hayfever cause 15) HTC Vive game 
Found on 
https://www.crosswordclues.com/clue/pollen

Latin, meaning: fine flour, fine meal. (also pollis ) 
Found on 
http://archives.nd.edu/ppp.htm

• (n.) Fine bran or flour. • (n.) The fecundating dustlike cells of the anthers of flowers. See Flower, and Illust. of Filament.
Found on 
http://thinkexist.com/dictionary/meaning/pollen/

a mass of microspores in a seed plant appearing usually as a fine dust. Each pollen grain is a minute body, of varying shape and structure, formed ... [25 related articles]
Found on 
http://www.britannica.com/eb/a-z/p/88

Male semen of plants.
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http://www.encyclo.co.uk/local/20667

<plant biology> The microspores of seed plants, the powdery mass of microspores shed from anthers. ... (09 Oct 1997) ... 
Found on 
http://www.encyclo.co.uk/local/20973

(pol´әn) the male fertilizing element of flowering plants.
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http://www.encyclo.co.uk/local/21001

Male reproductive cells of flowers necessary on stigma of female flower for seed production; collected and used by bees as food for rearing their young. Pollen provides the protein part of the diet. Frequently called bee bread when stored in cells in the colony.
Found on 
http://www.encyclo.co.uk/local/21560

Fine, powdery, yellowish grains that are the fertilizing element of flowering plants.
Found on 
http://www.encyclo.co.uk/local/22217

 The powder-like substance produced by a flowers anthers that fertilises the seeds
Found on 
http://www.encyclo.co.uk/visitor-contributions.php
 Pol'len  noun
Pol'len  noun [ Latin 
 pollen fine flour, fine dust; confer Greek ...] 
 1.  Fine bran or flour. [ Obsolete] 
 Bailey.   2.  (Botany) The fecundating dustlike cells of the anthers of flowers. See 
 Flower , and 
 Illust. of 
 Filament .  
 Pollen grain...
Found on 
http://www.encyclo.co.uk/webster/P/119

Dust-like grains that are the male reproductive cells of a plant.  They are carried by the wind, bugs, animals to the female flowers of the plant.  Without sufficient pollination, your plants will bear little fruit.  If you live in an area with few bees or pollinating insects, you may need to pollinate some of your plants by hand (use a small artis...
Found on 
http://www.howtogardenadvice.com/garden_info/gardening_glossary.html

Pollen: Small, light, dry protein particles from trees, grasses, flowers, and weeds that may be spread by the wind. Pollen particles are usually the male sex cells of the plant, and are smaller than the tip of a pin. Pollen is a potent stimulator of allergic responses. It lodges in the mucus membranes that line the nose and in other parts of the re...
Found on 
http://www.medterms.com/script/main/art.asp?articlekey=4975

Pollen is the male element of flowering plants, generally occurring in single grains, which vary greatly in form, size and colour. Pollen is formed in the part of the stamen known as the anther, and is shed when it is ripe.
Found on 
http://www.probertencyclopaedia.com/browse/BPA.HTM

pollen 1. The fine powderlike material consisting of pollen grains that is produced by the anthers of seed plants.  2. The fertilizing element of flowering plants, consisting of fine, powdery, yellowish grains or spores, sometimes in masses. As a botanical term for the fertilizing element of flowers (from Linnæus, 1751), earlier 'dust' (1523); fro...
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http://www.wordinfo.info/words/index/info/view_unit/1723/

Dust-like male bodies capable of fertilization of ovules. Each pollen grain contains two cells: the vegetative cell, from which the pollen tube develops and the generative cell, which produces sperm. 
Found on 
https://extension.umd.edu/hgic/resource-library/vegetable-gardening-glossar

 Also pollen; see under flower. Flower The beginning of this stage in the annual vegetative cycle of the vine. is about six to eight weeks after budding. The exact point in time depends on the year-specific temperature development, the temperature totals achieved at the respective location and the vine-specific growth under changing weather con...
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https://glossary.wein.plus/pollen

a yellow powdery part of a flower responsible for creating fruit
Found on 
https://sciencetrek.org/sciencetrek/topics/bees/glossary.cfm

Fine particles containing the fertilizing element of plants (male) formed by the anthers of plants. Most allergies are caused by grass and tree pollens.
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https://www.encyclo.co.uk/local/20496
 noun
 noun the fine spores that contain male gametes and that are borne by an anther in a flowering plant
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https://www.encyclo.co.uk/local/20974

a yellowish powder produced by the male parts of flowers and used for fertilization
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https://www.encyclo.co.uk/local/22348

Fine, dust like micro- spores containing male genes.
Found on 
https://www.encyclo.co.uk/local/23353

Fine, dust like micro- spores containing male genes.
Found on 
https://www.encyclo.co.uk/local/23362

(also pollis ): fine flour, fine meal.
Found on 
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
  No exact match found.