the GNU version of the Collaborative International Dictionary of English
adj. Serving of tending to evacuate; cathartic; purgative.
The Century Dictionary and Cyclopedia
Serving or tending to evacuate; cathartic; purgative.
Word Usage
"I think they should be daily, and fully evacuative, while the entrenched interests are pushing for "virtual drills" on a semiannual basis, to consist of sitting at one's desk "in a highly alert state of mind.""