jigger
From Longman Dictionary of Contemporary EnglishRelated topics: Drinkjiggerjig‧ger /ˈdʒɪɡə $ -ər/ noun [countable] DFDa unit for measuring alcohol, equal to one and a half ounces, or the small glass this is measured withExamples from the Corpusjigger• Vi McKeown knew every back street and jigger north of the Liver Building, and she would get there.• Mr Braithwaite drained off his lime squash and added a couple of jiggers of rum to his empty glass.• We better add two more strands to the jigger.