
1) Digestive system component 2) Gorge 3) Group IV gullet 4) Gullet 5) Muscle system 6) Muscular structure 7) Musculature 8) Oesophagus 9) Part of the thorax 10) Passage 11) Passageway 12) Pill passage 
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1) Gullet 2) Oesophagus 
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https://www.crosswordclues.com/clue/esophagus

In nematodes: The portion of the alimentary canal between the buccal capsule, or stoma, and the anterior portion of the intestine.  
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http://ppathw3.cals.cornell.edu/glossary/Defs_E.htm

organ that connects the mouth to the stomach.
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http://premierfarmdiary.blogspot.co.uk/2012/02/glossary.html

• (n.) That part of the alimentary canal between the pharynx and the stomach; the gullet. See Illust. of Digestive apparatus, under Digestive.
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http://thinkexist.com/dictionary/meaning/esophagus/

relatively straight muscular tube through which food passes from the pharynx to the stomach. The esophagus can contract or expand to allow for the ... [9 related articles]
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http://www.britannica.com/eb/a-z/e/44

A collapsible muscular tube that serves as a passageway between the pharynx and the stomach. It forms part of the gastrointestinal tract. Food passes down the esophagus by gravity and peristalsis. As it descends, the esophagus is posterior to the trachea and anterior to the spinal column. It passe...
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http://www.daviddarling.info/encyclopedia/E/esophagus.html

The esophagus is the tube from the mouth to the stomach. 
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(ә-sof´ә-gәs) the musculomembranous passage extending from the pharynx to the stomach, 25 to 30 cm (10 to 12 in) long in an adult, consisting of an outer fibrous coat, a muscular layer, a submucous layer, and an inner mucous membrane. The junction between the stomach and esophagus is closed by a muscul...
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http://www.encyclo.co.uk/local/21001
E·soph'a·gus  noun [ New Latin , from Greek 
 o'isofa`gos ; root of 
 o'i`sw which is used as future of 
 fe`rein to bear, carry (cf. Sanskrit 
 vī to go, drive) + 
 fagei^n to eat.] 
 (Anat.) That part of the alimentary canal between the pharynx a...
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Esophagus: The tube that connects the pharynx (throat) with the stomach. The esophagus lies between the trachea (windpipe) and the spine. It passes down the neck, pierces the diaphragm just to the left of the midline, and joins the cardiac (upper) end of the stomach. In an adult, the esophagus is about 25 centimeters (10 inches) long. When a person...
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(ue-sof;ua-gus)  A tubular portion of the GI tract that leads from the pharynx to the stomach as it passes through the thoracic cavity.
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The dense, muscular tube, 9 to 10 inches long, that extends from the back of the throat (pharynx) to the stomach.
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http://www.swsbm.com/ManualsMM/MedHerbGloss2.txt

The muscular tube extending from the pharynx (back of the mouth) to the stomach
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That portion of the gut which connects the pharynx to the stomach.
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http://www.ucmp.berkeley.edu/glossary/gloss7metazoa.html

That portion of the gut which connects the pharynx to the stomach.
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http://www.ucmp.berkeley.edu/glossary/glossary_7.html

esophagus (s), esophagi (pl) 1. The passage down which food moves between the throat and the stomach. 2. In medicine, the musculomembranous passage extending from the pharynx to the stomach.  It is about 25-cm long and consists of three parts:  The cervical part, from the cricoid cartilage to the thoracic inlet.  The thoracic part, from t...
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oisophagos, gullet.
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https://aclandanatomy.com/Glossary.aspx

Portion of the body that connects the mouth with the stomach
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https://sciencetrek.org/sciencetrek/topics/birds_of_prey/glossary.cfm

a vertical tube that goes from mouth to stomach
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https://sciencetrek.org/sciencetrek/topics/digestive_system/glossary.cfm
oesophagus noun the passage between the pharynx and the stomach
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https://www.encyclo.co.uk/local/20974

The muscular tube extending between and connecting the pharynx to the stomach.
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https://www.encyclo.co.uk/local/21571

A muscular tube leading from the mouth to the stomach.
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https://www.encyclo.co.uk/local/22445

a muscular passage connecting the mouth or pharynx with the stomach in invertebrate and vertebrate animals; gullet.
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https://www.infoplease.com/dictionary/esophagus

the muscular canal that runs from the throat to the stomach.
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https://www.stanfordchildrens.org/en/topic/default?id=glossary---the-child-
  No exact match found.