Entry 1 sense Webster, 1913 Bowhead · Bow·head · IPA /ˈbəʊhɛd/ 01 n. The great Arctic or Greenland whale. (Balæna mysticetus). See Baleen, and Whale. 1. The great Arctic or Greenland whale. (Balæna mysticetus). See Baleen, and Whale.(Zool.) See: Baleen, Whale