Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: AdjectiveDescription: {{simile|colloquial}} Asleep or unconscious, particularly if this has occurred suddenly and the sleep is deep.Ngram: out like a lightNgram Text: out like a lightSource: WiktionaryIssue: 0Wiktionary tag: simileNgram Count: 4