cully /ˈkʌli/noun 3verb 1forms 3 noun3 •(slang) A companion. •(no longer used) A person who is easily tricked or imposed on; a dupe, a gullible person.Yet the rich Cullies may their boasting spare; / They purchase but sophisticated VVare. — 1678 •(no longer used, historical) A male client of a prostitute; a john, a gonk.The assumption tends to be the opposite: Whores constantly seek sexual encounters to fulfill their burning desires and also sometimes manage to wheedle gold out of their cullies. — 2006 verb1 •To trick, to impose on, to dupe. formscullied · cullying · cullies