vape (verb) – to inhale the vapor produced by a non-combustible cigarette or e-cig
BREAKDOWN: VAP- (steam or mist)
— a vaper is someone “who smokes” electronic cigarettes
— vape was the Oxford Dictionaries Word of the Year 2014.
This word is built on the root VAP-, which means steam or mist.
Common VAP- words include evaporation and vapor.
More esoteric VAP- words include devaporation and pervaporate.