1. a small glass adequate to hold a single swallow of whiskey • Syn: shot glass, pony • Hypernyms: glass, drinking glass 2. any small mast on a sailing vessel; especially the mizzenmast of a yawl • Syn: jiggermast • Hypernyms: mast 3. larval mite that sucks the blood of vertebrates including human beings causing intense irritation • Syn: harvest mite, chigger, redbug • Hypernyms: trombiculid • Member Holonyms: Trombicula, genus Trombicula