yap

The high-pitched bark of a small dog, or similar.countable

Casual talk; chatter.slanguncountable

• Had I taken his accusations seriously I might have recommended a change in my under-managership, but I never could translate our jammy products into gas or explosives or even poison. Still yap, at least as concerned Beldite's.
• They couldn’t rise above their calls for peace. Those who weren’t “defenders of the fatherland” were incapable of anything except yap and blather about “stopping the war.”

The mouth, which produces speech.countablederogatoryslang

• Shut your yap!

A badly behaved person, especially a child.Geordiecountable

A fool.countabledatedslang

Of a small dog, to bark.intransitive

To talk, especially excessively; to chatter.intransitiveslang

• You’re always yapping, I wish you’d shut up.

To rob or steal from (someone).slangtransitive

• Ante up! Yap that fool!