Question #117236. Asked by star_gazer.
Last updated Dec 04 2016.
HannahConner88
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HannahConner88 15 year member
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It is called a trunk because it looks like a tree trunk. The proper name is Proboscis, which is an appendage that comes from the head of many creatures. The Proboscis' purpose is for the nourishment of an animal, insect, etc.