Opposing childbirth.

(figuratively, informal, humorous, idiomatic) To stop talking; to be quiet; to shut one's mouth.

(mineralogy) A tetragonal-ditetragonal dipyramidal mineral containing chlorine, copper, hydrogen, oxygen, and potassium.

(mineralogy) An orthorhombic-dipyramidal mineral containing beryllium, calcium, oxygen, potassium, silicon, sodium, and titanium.