Definition of beaked whale
: any of a family (Ziphiidae) of toothed whales that have a relatively long, narrow snout suggestive of a beak, that in the males often have a large bulging forehead, and that unlike other whales lack a notch on the fluke ◆Beaked whales lack teeth in the upper jaw. Typically, female beaked whales also lack functional teeth in the lower jaw while male whales have one to two pairs of small tusklike teeth in the lower jaw. Beaked whales feed chiefly on deepwater squid.
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