To suffer decomposition due to biological action, especially by fungi or bacteria.
The apple left in the cupboard all that time had started to rot.
To decline in function or utility.
Your brain will rot if you spend so much time on the computer, Tony!
To (cause to) deteriorate in any way, as in morals; to corrupt.
The process of becoming rotten; putrefaction.
Decaying matter.
When a turkey vulture detects the scent of rot, it circles down, tracing the plume of chemicals to its source.
Abbreviation of refugee Olympics team (country code for the team).
Inherited from Middle English roten, rotten, from Old English rotian (“to rot, become corrupted, ulcerate, putrefy”), from Proto-West Germanic *rotēn, from Proto-Germanic *rutāną (“to rot”).
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Initialism of record of transmission.