To move forward on the hands and knees or by dragging the body close to the ground. The baby began to crawl across the floor.
To move slowly or with difficulty, especially in a way that is close to the ground. Traffic was crawling along the highway due to the accident.
To behave in a servile or obsequious manner. He would crawl to his boss to get a promotion.
To spread or move in a slow or stealthy manner. The ivy began to crawl up the side of the house.
Computing: to systematically browse or index the content of (a website or the internet) with an automated program. The search engine regularly crawls the site to update its index.