MEANING: noun:
1. Severe criticism.
2. Anti-aircraft fire.

ETYMOLOGY: An acronym of German Flugzeugabwehrkanone (anti-aircraft gun), from Flieger (flyer) + Abwehr (defense) + Kanone (gun). Earliest documented use: 1938. The word is sometimes also spelled as flack.

KLAK - the second of the Tappet brothers

BLAK - one of the colors of my True Love's hair

FLARK - Noah's flying boat