drainage

English Thesaurus

1. emptying something accomplished by allowing liquid to run out of it (noun.act)

hypernym	:	emptying, evacuation, voidance,
definition	:	the act of removing the contents of something (noun.act)

derivation	:	drain,
definition	:	empty of liquid; drain the liquid from (verb.change)

derivation	:	drain, run out,
definition	:	flow off gradually (verb.motion)

derivation	:	drain,
definition	:	empty of liquid; drain the liquid from (verb.change)

derivation	:	drain, run out,
definition	:	flow off gradually (verb.motion)