1. Large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris
   "The sperm whale dove to extreme depths hunting for giant squid";
   - cachalot, black whale, Physeter catodon

Derived forms: sperm whales, sperm whale

Type of: toothed whale

Part of: genus Physeter, Physeter

Encyclopedia: Sperm whale