MEANING: verb intr.:
1. To listen attentively.
2. Hark back: to allude to or return to a previous topic, time, event, etc.

ETYMOLOGY: From Old English heorcian (to listen). Earliest documented use: 1175. A variant is hearken.

MARK - the Muster who has three quarks, according to James Joyce

HAIK - when the Center snaps the football on the 5/7/4th syllable (that is, the count is missing its final syllable)