crepitate
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{dag}1. intr. To break wind. Obs.

    2. Entom. Of certain beetles: To eject a pungent fluid suddenly with
a sharp report. (Cf. BOMBARDIER 4.)

    3. To make a crackling sound, to crackle: spec. of the tissue of the
lungs (also used of the action accompanying or producing this sound; cf.
CREPITATION 2).

    4. To rattle: said of the sound made by the crepitaculum of the
rattle-snake. (Cf. CREPITATION 3.)

    Hence {sm}crepitating vbl. n. and ppl. a.