Proboscis

(pro-bos' -is). In biology, any part or organ extending from the anterior end of an animal after the manner of an elephant's trunk; a long, flexible nose, snout, rostrum, beak, sucking-mouth, tongue, or other buccal or pharyngeal organ. P. -sheath, the receptacle of the proboscis in the Acanthocephala and Aemertina. Cf. Rhynchodceum.