Hosta

Flak was introduced to the English language in World War II to refer to the anti-aircraft fire from anti-aircraft guns, from the German Flugabwehrkanone (Flak), for "aircraft defence cannon".

Flak may also refer to:

Warfare

Flak tower, a defensive structure

Arts, entertainment, and media

Fictional entities

Flak, a fictional commanding officer in the video game Advance Wars 2: Black Hole Rising
F.L.A.K., a fictional weapon in the G.I. Joe universe
FL4K, a fictional wandering robot in the video game Borderlands 3

Other uses in arts, entertainment, and media

Flak (video game), an 8-bit computer game published in 1984 by Funsoft
Flak, a UK band whose music has featured in Malcolm in the Middle
Flak Magazine, an American online magazine, founded in 1998

Other uses

Flak, intense criticism, a metaphor derived from intense anti-aircraft gunfire
"Flak", a class of the Propaganda model advanced by Edward S. Herman and Noam Chomsky
Flak, "flat land" or "flat sandbank", a component of Germanic language area place names, e.g. Flakfortet
Flak jacket, protective clothing worn by soldiers and others to protect themselves from debris and shrapnel