Answer: flak

AnswerCrossword Clue
FLAK

A lot of beef?

FLAK

... jacket (protective garment)

FLAK

Anti-aircraft fire.

FLAK
Anti-aircraft burst.
FLAK
A. A. fire.
FLAKAntiaircraft fire.
FLAKAerial hazard.
FLAKA.A. fire.
FLAKAck-ack.
FLAKBomber's hazard
FLAKBane of bombers
FLAKBomber's bugbear
FLAK... jacket
FLAKSharp criticism
FLAKSlams
FLAKAntiaircraft artillery
FLAKCriticism, informally
FLAK... jacket (protective wear)
FLAKComplaints
FLAKType of jacket
FLAKExcessive criticism
FLAK... jacket (protective vest)
FLAKVerbal abuse
FLAKAck-ack
FLAKPushback
FLAKIrritating criticism
FLAKKind of armored jacket
FLAKCriticism
FLAKKind of jacket
FLAKHostile criticism
FLAKHarsh criticism
FLAKBomber pilot's worry
FLAKCritical words
FLAKAntiaircraft fire
FLAKAnti-aircraft fire
FLAKHostile reaction
FLAKStrong criticism
FLAKVerbal jabs
FLAKBomber pilot's woe
FLAKAnti-aircraft artillery