Submitted by György Chityil ... on Fri, 01/19/2018 - 23:54 Hierarchy: NounDescription: {{British|informal|plurale tantum}} Underwear of a red or dark color warn by a woman or girl during her menstruation.Ngram: period pantsNgram Text: period pantsSource: WiktionaryIssue: 0Wiktionary tag: plurale tantumNgram Count: 2