crawling (Noun) — A slow mode of locomotion on hands and knees or dragging the body.
crawling (Verb) — Move slowly; in the case of people or animals with the body near the ground. ex. "The crocodile was crawling along the riverbed"
crawling (Verb) — Feel as if crawling with insects. ex. "My skin crawled--I was terrified"
crawling (Verb) — Be full of. ex. "The old cheese was crawling with maggots"
crawling (Verb) — Show submission or fear.
crawling (Verb) — (water sport) swim by doing the crawl. ex. "European children learn the breast stroke; they often don't know how to crawl"
crawling (Verb) — (computing) index linked files or web sites, e.g. so they can later be searched.