Entry 2 senses · 2 variants Webster, 1913 Dogger · Dog·ger · IPA /ˈdɑ.ɡɚ/ n. n. 01 n. A two-masted fishing vessel, used by the Dutch. 1. A two-masted fishing vessel, used by the Dutch.(Naut.) 02 n. A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron. 1. A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron.