1. A hollow twanging sound.
2. The act of hitting a baseball so that it drops suddenly; SYN. plunker.

1. To pluck or hit so as to produce a quick, hollow, metallic, or harsh sound
2. To set down suddenly; plump
3. To make a plunking sound
4. To drop abruptly; dive
5. To come out in favor of someone or something; plump — used with for