ONSLAUGHT Meaning of ONSLAUGHT in English transcription, транскрипция: [ ˈɔnslɔ:t ]n. a fierce attack. [earlier anslaight f. MDu. aenslag f. aen on + slag blow, with assim. to obs. slaught slaughter] English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012