Definitions from Wiktionary ( )

▸ noun:  (uncountable) Something disgusting.
▸ noun:  (derogatory, informal) A general insult.
▸ verb:  To say "yuck"; to express disgust.
▸ verb:  To vomit or gag;
▸ verb:  (euphemistic) fuck.
▸ noun:  The sound made by a whole-hearted laugh.
▸ verb:  (often followed by "up") To laugh or joke.
▸ verb:  To yank or grab.
▸ noun:  (US, military, slang) Synonym of yearling (“a sophomore at West Point military academy”)
▸ verb:  Alternative form of yawk (“to inflict a violent impact upon”) [(slang, African-American Vernacular, MLE, gaming, rare, ambitransitive) to shoot, to make an impact (on) by or as if by firing.]

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