legs of seated person" (late 13c.). Lap dance first recorded 1993.
"To lap dance, you undress, sit your client down, order him to stay still and fully clothed, then hover over him, making a motion that you have perfected by watching Mister Softee ice cream dispensers." [Anthony Lane, review of "Showgirls," "New Yorker," Oct. 16, 1995]
Phrase lap of luxury first recorded 1802.
lap"take up liquid with the tongue," from O.E. lapian, from P.Gmc. *lapajanan (cf. O.H.G. laffen "to lick," O.S. lepil, Ger. Löffel "spoon"), from PIE imitative base *lab- (cf. Gk. laptein "to sip, lick," L. lambere "to lick"). Meaning "splash gently" first recorded 1823, based on similarity of sound.
lap"to lay one part over another," early 13c., from
lap (n.). The sense of "to get a lap ahead (of someone) on a track" is from 1847, on notion of "overlapping." The noun meaning "a turn around a track" (1861) is from this sense. Related: Lapped; lapping; laps.