waterlase
n.β Β«Unlike a conventional drill, waterlaseβas itβs calledβnever touches a tooth. Instead, the tool shoots out a laser beam, combined with water, to quickly ream out a cavity.Β» ββHealth Watch: New Water Laser” by Monika Sangani KTEN-TV (Ada, Okla.) Feb. 7, 2005. (source: Double-Tongued Dictionary)