rot

Short definition from Wiktionary

Verb

1. 1
   To suffer decomposition due to biological action, especially by fungi or bacteria.
2. 2
   To decline in function or utility.
3. 3
   To (cause to) deteriorate in any way, as in morals; to corrupt.
4. 4
   To make putrid; to cause to be wholly or partially decomposed by natural processes.
5. 5
   To spend a long period of time (in an unpleasant place or state).
6. 6
   To expose, as flax, to a process of maceration, etc., for the purpose of separating the fiber; to ret.
7. 7
   To talk nonsense.

Noun

1. 1
   The process of becoming rotten; putrefaction.
2. 2
   Decaying matter.
3. 3
   Any of several diseases in which breakdown of tissue occurs.
4. 4
   Verbal nonsense.
5. 5
   Initialism of record of transmission.

Proper noun

1. 1
   Abbreviation of refugee Olympics team (country code for the team).