Answer:

winkle

Answer	Crossword Clue
WINKLE	Member of the Pickwick Club.
WINKLE	Edible sea snail.
WINKLE	Marine snail.

WINKLE	Oyster's enemy
WINKLE	Sea snail
WINKLE	Destructive whelk
WINKLE	Rip Van ....

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.