
1) Animal disease 2) French word used in English 3) Hock swelling on a horse 4) Resulting in lameness
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https://www.crosswordclues.com/clue/spavin

1) Bog
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https://www.crosswordclues.com/clue/spavin

hard bony tumour on a horse's leg
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http://phrontistery.info/s.html

• (n.) A disease of horses characterized by a bony swelling developed on the hock as the result of inflammation of the bones; also, the swelling itself. The resulting lameness is due to the inflammation, and not the bony tumor as popularly supposed.
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http://thinkexist.com/dictionary/meaning/spavin/

<veterinary> A disease of horses characterised by a bony swelling developed on the hock as the result of inflammation of the bones; also, the swelling itself. The resulting lameness is due to the inflammation, and not the bony tumour as popularly supposed. Bog spavin, a soft swelling produced by distention of the capsular ligament of the hock...
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http://www.encyclo.co.uk/local/20973
Spav'in noun [ Middle English
spaveyne , Old French
esparvain , French
éparvin ; akin to Old French
espervier a sparrow hawk, French
épervier , from Old High German
sparwāri (G.
sperber ), from Old High German
sparo sparrow, because th...
Found on
http://www.encyclo.co.uk/webster/S/156

An unsoundness of the hock which can involve soft tissues (bog spavin) or bone (bone spavin or jack spavin)
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http://www.gaitedhorses.net/Articles/HorseGlossary.html

Type: Term Pronunciation: spā′vin Definitions: 1. Chronic disorder involving the tarsus (i.e., hock) of the horse. Synonyms: jack spavin, jack
Found on
http://www.medilexicon.com/medicaldictionary.php?t=83296

[
n] - a swelling of the hock joint of a horse
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http://www.webdictionary.co.uk/definition.php?query=spavin
noun a swelling of the hock joint of a horse; resulting in lameness
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https://www.encyclo.co.uk/local/20974

A bone enlargement of the hock resulting in lameness in one or two hind legs.
Found on
https://www.encyclo.co.uk/local/21481
No exact match found.