alum

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: College

al·um /ˈæləm/ noun [countable] American English informal  SECa former student of a school, college etc 校友，毕业生 a Crawford High alum 克劳福德高中的一位校友

Examples from the Corpus

alum• Spence's product was an ammonium alum which gradually displaced the potash alum which had been made principally at Whitby.• He sprayed a picric acid and alum solution into the noses of forty-six hundred Alabamians, to no good end.• Much of the long-distance trade was in commodities connected with the cloth industry, notably dyestuffs such as woad and alum.• Here he also made alum and sulphuric acid by the lead chamber process.• The treatment so far had been innocuous: quinine pills and injections of alum water.• He learned, among other things, what alum served for, besides dyeing.• Whit- or white-leather was leather that had been dressed with alum, and it was often horse-leather.Origin alum (1300-1400) Old French Latin alumen

al·um nounChineseSyllable  

of a school, student college Corpus etc a former

alum
al‧um /ˈæləm/ noun [countable] American English informala former student of a school, college etc:
    a Crawford High alum

alumBrE /ˈæləm/ 🔊NAmE /ˈæləm/ 🔊 noun [uncountable] a substance formed from aluminium/aluminum and another metal, used, for example, to prepare leather and to change the colour of things 明矾，白矾（用于制革、印染等）