dentifrice
英 ['dentɪfrɪs]美 ['dɛntə,frɪs]
n. 牙膏；牙粉
英语词源
dentifrice (n.)
early 15c., from Middle French dentifrice
(15c.), from Latin dentifricium "powder for rubbing the teeth," from dens (genitive dentis) "tooth" (see tooth) + fricare "to rub" (see friction).