Definitions from Wiktionary (ROT)

▸ verb:  (intransitive) To suffer decomposition due to biological action, especially by fungi or bacteria.
▸ verb:  (intransitive) To decline in function or utility.
▸ verb:  (ambitransitive) To (cause to) deteriorate in any way, as in morals; to corrupt.
▸ verb:  (transitive) To make putrid; to cause to be wholly or partially decomposed by natural processes.
▸ verb:  (intransitive, figurative) To spend a long period of time (in an unpleasant place or state).
▸ verb:  (transitive) To expose, as flax, to a process of maceration, etc., for the purpose of separating the fiber; to ret.
▸ verb:  (dated, slang) To talk nonsense.
▸ noun:  The process of becoming rotten; putrefaction.
▸ noun:  Decaying matter.
▸ noun:  (chiefly in compounds) Any of several diseases in which breakdown of tissue occurs.
▸ noun:  (uncountable) Verbal nonsense.
▸ noun:  (broadcasting) Initialism of record of transmission.
▸ noun:  (sports) Abbreviation of refugee Olympics team. (country code for the team)

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