Answer:

cuttle

Answer	Crossword Clue
CUTTLE	Suckered mollusk
CUTTLE	Army mollusk?
CUTTLE	Kind of fish.

CUTTLE	Dickens' Captain ....
CUTTLE	Fold in pleats
CUTTLE	Kind of fish or bone
CUTTLE	Sea creature with eight arms

Crossword

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