Definitions

1. noun

the fourth item or one of four equal parts of a set or group

“She picked four apples from the tree.”

2. adjective

constituting or forming four equal parts

“The room was divided into four sections.”

3. numeral

a number, four

“The bus stops at four o’clock.”

4. interjection

used to ask someone to wait or give them more time

“Hold up, just four seconds, let me get a picture.”