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Noun, pl. beaks

1. A prominent terminal projection, especially of a carpel or fruit. (

2. An external anatomical structure of birds which is used for eating and for grooming, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young. (

3. A rigid structure projecting from the front of a bird’s face, used for pecking, grooming and for eating food. (

4. A similar structure forming the jaws of an octopus, turtle, etc. (

5. The long projecting sucking mouth of some insects and other invertebrates, as in the Hemiptera. (

6. The upper or projecting part of the shell, near the hinge of a bivalve. (

7. The prolongation of certain univalve shells containing the canal. (

8. (Botany)
Any process somewhat like the beak of a bird, terminating the fruit or other parts of a plant. (

Syn: bill, rostrum

Word origin: Middle English bec, from Anglo-Norman, from Old French bec, from Latin beccus, from Gaulish *beccos (“chicken beak”, literally “small”), (compare Irish beag (“little”), Welsh bach, bychan Breton bac’h, bihan and beg (“beak”), from Proto-Celtic *bacc (“hook”).

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