Two's company and three is none.

Two's company, three's trumpery.

Eurasian three-toed woodpeckers are known for their distinctive drumming sound.

The Eurasian three-toed woodpecker is a species of woodpecker found in Europe and Asia.

Good things come in threes.

Shirtsleeves to shirtsleeves in three generations is a proverb that means wealth gained in one generation is often lost by the third generation.

The three-striped ground squirrel is a small mammal native to Southeast Asia.

Tate's three-striped dasyure is a small carnivorous marsupial found in Australia.

He made three strikes and he was out of the game.

The three-center two-electron bond is a type of chemical bond.