alum

n [U] white mineral salt used in medicine and in dyeing 明矾, 白矾（用於医药及染色）.

alteration, altercation, alternate, alternate angles, alternately, alternating current, alternation, alternative, alternatively, alternator, although, although (US also altho), altimeter, altitude, alto, altogether, altruism, altruist, altruistic, altruistically, aluminium, aluminum, alumna, alumnus, alveolar, always, am, amalgam, amalgamate, amalgamation, amanuensis, amass, amateur, amateurish, amateurishly, amateurism, amatory, amaze, amazement, amazing,