waterpick

[ waw-ter-pik, wot-er- ]
/ ˈwɔ tərˌpɪk, ˈwɒt ər- /

noun

a portable electric appliance that uses a stream of water under force to remove food particles from between the teeth and to massage the gums.
Also called waterjet.

Origin of waterpick

water + pick2; earlier as Water Pik a trademark (1963)