verb

1. Of something solid, to divide fully or partly along a more or less straight line.

   “He has split his lip.”

2. Of something solid, particularly wood, to break along the grain fully or partly along a more or less straight line.

3. To share; to divide.

   “We split the money among three people.”

Synonyms: break up, split up, cleave

noun

1. An instance where something splits.

2. A division in the mind, or affecting one's sense of self.

3. The cleavage of a covalent bond.

adjective

1. Resembling the sound of something being split or ripped.

2. Very rapid.

   “They moved at a splitting pace.”

3. Severe.

   “I have a splitting headache.”