v.
Pronunciation: ' wo ̇ rn
Function: verb
Etymology: Middle English, from Old English warnian; akin to Old High German warn ō n to take heed, Old English wær careful, aware ― more at WARY
Date: before 12th century
transitive verb
1 a : to give notice to beforehand especially of danger or evil b : to give admonishing advice to : COUNSEL c : to call to one's attention : INFORM
2 : to order to go or stay away ― often used with off
intransitive verb : to give a warning
– warn · er noun