Leary has 3 different meanings across 2 categories:
Noun · Proper Noun
United States psychologist who experimented with psychoactive drugs (including LSD) and became a well-known advocate of their use (1920-1996)
Alternative spelling of leery
An Irish surname, from Irish, an alternate anglicization of Ó Laoghaire (“descendant of Leary”) (O'Leary).