Answer:

cotter

Answer	Crossword Clue
COTTER	Fastening pin
COTTER	Wedge-shaped pin
COTTER	Securing pin

COTTER	... pin (fastening device)
COTTER	Subject of Robert Burns' poem.
COTTER	Type of pin.
COTTER	English farm worker.
COTTER	... pin.
COTTER	Machine pin
COTTER	Locking device
COTTER	Kind of pin

COTTER	Machinist's pin
COTTER	..... pin
COTTER	Pin type
COTTER	... pin

Crossword

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