1. the measurement of how long something is from one end to the other
2. the amount of time that something lasts or continues
3. a piece or section of something long

Examples

• The length of the room is twelve feet.
• We measured the length of the rope before cutting it.
• The movie’s length was over two hours.
• She complained about the length of the meeting.
• He bought a length of wire at the hardware store.
• The length of her hair reached her waist.
• The bridge spans a length of 500 meters.