SkyfireDict

alum   (TTS Sound)

The noun alum has 4 senses

• alum, ammonia alum, ammonium alum -- (a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum)


• alum, potassium alum, potash alum -- (a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum)


• alumnus, alumna, alum, graduate, grad -- (a person who has received a degree from a school (high school or college or university))


• alum -- (a double sulphate of aluminum and potassium that is used as an astringent (among other things))