v.1. To place someone or something on the inside of or within something: Put the key in the ignition and start the car. Let me put these flowers in water. The recipe says to put in two cups of sugar. They put them in jail for robbery.
2. To set something into some state or position: She put the car in first gear and drove away. During the summer, I usually put my hair in a ponytail.
3. To make a formal offer of something: The defendant put in a plea of not guilty. I put an offer in on the house.
4. To introduce some information, as in a conversation: Will you put in a good word for me at the next meeting?
5. To spend or expend something at some task: I put in eight hours at the office. You should put more effort in this project. The actor put in a strong performance.
6. To plant or build something, especially on the ground: We put in 20 rows of pine trees. They tore the shed down and put a pool in.
7. To install something: We put in a new washing machine. The electrician put a new outlet in.
8. To enter a port or harbor. Used of sailing vessels: The freighter put in at San Diego to refuel.
9. put in for To apply for something: I put in for a pay raise, but I doubt I'll get it.