Definitions from Wiktionary ( )

▸ noun:  (England, dialectal, possibly obsolete) An oak.
▸ noun:  (UK, thieves slang, obsolete) A watch (timepiece).
▸ noun:  Alternative form of yak (“chatter; talk”) [An ox-like mammal native to the Himalayas, Mongolia, Burma, and Tibet with dark, long, and silky hair, a horse-like tail, and a full, bushy mane.]
▸ verb:  Alternative form of yak (“talk; vomit”) [(slang, intransitive) To talk, particularly informally but persistently; to chatter or prattle.]

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