crotchet

verb

To make (a piece of) needlework using a hooked needle; to make interlocking loops of thread.

1. A musical note one beat long in 4/4 time.
2. A sharp curve or crook; a shape resembling a hook
3. A whim or a fancy
4. A forked support; a crotch.
5. An indentation in the glacis of the covered way, at a point where a traverse is placed.
6. The arrangement of a body of troops, either forward or rearward, so as to form a line nearly perpendicular to the general line of battle.
7. A square bracket.

verb

To play music in measured time