whale
n. countablen. a very large animal that lives in the ocean and breathes air through a hole on top of its head. They look like huge fish but are actually mammals.
n. any of the larger cetacean mammals having a streamlined body and breathing through a blowhole on the head. In informal gambling or finance contexts, it refers to a person or entity that bets or invests exceptionally large sums of money.
The blue whale is the largest animal on Earth.
During our boat trip, we were lucky enough to see a whale breach the surface of the water.
Marine biologists are currently studying how whale song facilitates communication across vast distances of the ocean floor, potentially linking pods separated by hundreds of miles.
The plural form is usually 'whales', though 'whale' is sometimes used as a collective plural in a hunting or commercial context.