pounce

Short definition from Wiktionary

Noun

1. 1
   A type of fine powder, as of sandarac, or cuttlefish bone, sprinkled over wet ink to dry the ink after writing or on rough paper to smooth the writing surface.
2. 2
   Charcoal dust, or some other coloured powder for making patterns through perforated designs, used by embroiderers, lacemakers, etc.
3. 3
   A sudden leaping attack.
4. 4
   The claw or talon of a bird of prey.
5. 5
   A punch or stamp.
6. 6
   Cloth worked in eyelet holes.
7. 7
   Synonym of bump (“sudden movement of underground strata”).

Verb

1. 1
   To sprinkle or rub with pounce powder.
2. 2
   To leap into the air intending to seize someone or something.
3. 3
   To attack suddenly by leaping.
4. 4
   To eagerly seize an opportunity.
5. 5
   To strike or seize with the talons; to pierce, as with the talons.
6. 6
   To stamp holes in; to perforate.