- To curtail is defined as to restrict something, stop something or deprive of something.
An example of curtail is when a town wants to stop drunk driving.
Origin of curtailMiddle English curtailen, altered (by associated, association with taillen ; from Old French taillier: see tailor) ; from Old French curtald, curtal
transitive verbcur·tailed, cur·tail·ing, cur·tails
Origin of curtailMiddle English curtailen, to restrict, probably blend of Old French courtauld, docked; see curtal, and Middle English taillen, to cut (from Old French tailler; see tailor).
(third-person singular simple present curtails, present participle curtailing, simple past and past participle curtailed)