curtail UK /kɜːˈteɪl/US /kɚˈteɪl/verb 3noun 1forms 5 verb3 •To shorten or abridge the duration of; to bring an end to; to truncate.When the audience grew restless, the speaker curtailed her speech. •To limit or restrict; to keep in check. •(no longer used) To cut short the tail of (an animal).Curtailing horses procured long horse-hair. noun1 •A scroll termination, as of a step, etc. formscurtailed · curtailing · curtaileth · curtails · curtailest