[evac.u.ate] vb -at.ed ; -at.ing [ME, to draw off morbid humors, fr. L evacuatus, pp. of evacuare to empty, fr. e- + vacuus empty] vt (15c) 1: to remove the contents of: empty
2: to discharge from the body as waste: void
3: to remove something (as gas or water) from esp. by pumping
4. a: to remove esp. from a military zone or dangerous area b: to withdraw from military occupation of c: vacate "were ordered to ~ the building" ~ vi 1: to withdraw from a place in an organized way esp. for protection
2: to pass urine or feces from the body -- evac.u.a.tive adj