Answer:

sheepshank

Answer	Crossword Clue
SHEEPSHANK	Knot used to shorten lines
SHEEPSHANK	Conformist's tee shot?
SHEEPSHANK	Type of knot

SHEEPSHANK	Line-shortening knot
SHEEPSHANK	Knot for shortening a rope.
SHEEPSHANK	Rope-shortening knot

Crossword

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