The Clue
Hard knocks (4 letter answer)
The Answer
BOPS
Tags
Notes
The answer BOPS is seen occasionally, appearing about once every 650 puzzles.
Related Clues
Belts
Conks
Conks on the head
Dances to jazz
Hits, in slang
Jazz forms
Knocks on the noggin
Comic-strip blows
Hits with one's fist
Runs (around), informally
Bits of Three Stooges violence
Definition
BOP as a noun:
1. (Federal Bureau of Prisons, BoP) = the law enforcement agency of the Justice Department that operates a nationwide system of prisons and detention facilities to incarcerate inmates sentenced to imprisonment for federal crimes
2. (bop, bebop) = an early form of modern jazz (originating around 1940)
BOP as a verb:
1. (bop, bebop) = dance the bebop
2. (sock, bop, whop, whap, bonk, bash) = hit hard