gypsum

n [U] mineral (calcium sulphate) from which plaster of Paris is made, also used as fertilizer 石膏.

guttersnipe, guttural, guv, guvnor, guy, guy rope, guzzle, guzzler, gybe (US jibe), gym, gym-slip (also slip), gymkhana, gymnasium, gymnast, gymnastic, gymnastics, gynaecological (US gynecological), gynaecologist (US gynecologist), gynaecology (US gynecology), gyp, gypsy, gypsy (also gipsy, Gypsy), gyrate, gyration, gyro, gyroscope, H, h'm, H, h, H-bomb, ha, ha-ha, habeas corpus, haberdasher, haberdashery, habit, habit-forming, habitability, habitable, habitant,