Entry 1 sense Webster, 1913 Teetotaler /tētˌ-ōtˌ-āl'-ẽr/ · Tee·to·tal·er · IPA /ˈtitoʊtəlɚ/ 01 n. One pledged to entire abstinence from all intoxicating drinks. 1. One pledged to entire abstinence from all intoxicating drinks.