A small cetacean of the family Phocoenidae, related to dolphins and whales.
Any small dolphin.
Said of an air-breathing aquatic animal such as a porpoise or penguin: To repeatedly jump out of the water to take a breath and dive back in a continuous motion.
Said of an aircraft: to make a series of plunges when taking off or landing; or of a watercraft: to successively plunge up and down in the water.
A young offspring of a canid (ursid, felid, pinniped), especially of a dog or a wolf, the young of a bear or similar mammal (lion, tiger, seal); a pup, wolf cub.
One of several wooden strips to prevent wear on a windlass on a clipper-era ship.
An insolent youth; a mere child.
A tooth on a sprocket wheel (compare sprocket and cog).
To give birth.