[n] drawing off water from its main channel as for irrigation
[n] drawing of fluid or inflammation away from a diseased part of the body
[n] inherited properties shared with others of your bloodline
[n] a line of reasoning that shows how a conclusion follows logically from accepted propositions
[n] (historical linguistics) an explanation of the historical origins of a word or phrase
[n] the source from which something derives (i.e. comes or issues); "he prefers shoes of Italian derivation"
[n] (descriptive linguistics) the process whereby new words are formed from existing words or bases by affixation: `singer' from `sing'; `undo' from `do'