Define catapult: an ancient military device for hurling missiles â catapult in a sentence an ancient military device for hurling missiles; a device for launching an airplane at flying speed (as from an aircraft carrier)â¦
demure (comparative more demure, superlative most demure) Quiet, modest, reserved, sober, or serious. She is a demure young lady. W. Black Nan was very much delighted in her demure way, and that delight showed itself in her face and in her clear bright eyes.
1. not pure; mixed with extraneous matter, esp. of an inferior nature: impure water. 2. modified by admixture, as color. 3. mixed or combined with something else: an impure style of architecture. 4. regarded by a religion as unclean.