chickenhawk

Chickenhawk has two distinct meanings in American usage.

The first is a bird of prey that hunts chickens, such as a Cooper's hawk or red-tailed hawk.

The second is a political slur for someone who advocates for war or aggressive military action but avoided military service themselves: The senator was called a chickenhawk for pushing intervention despite his draft deferments.

A third, slang sense refers to an older man who pursues much younger sexual partners, especially underage boys.