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acorn worm
a·corn worm (plural a·corn worms)


noun 
Definition:
 
marine burrower: a burrowing invertebrate ocean animal resembling a worm with an acorn-shaped snout that it uses to dig for food. Native to: shallow coastal waters.  Phylum Chordata.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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