Definitions of crawl:

• noun:   a slow creeping mode of locomotion (on hands and knees or dragging the body)

  Example: "A crawl was all that the injured man could manage"

• noun:   a very slow movement

  Example: "The traffic advanced at a crawl"

• noun:   a swimming stroke; arms are moved alternately overhead accompanied by a flutter kick
• verb:   be crawling with

  Example: "The old cheese was crawling with maggots"

• verb:   feel as if crawling with insects

  Example: "My skin crawled--I was terrified"

• verb:   move slowly; in the case of people or animals with the body near the ground

  Example: "The crocodile was crawling along the riverbed"

• verb:   swim by doing the crawl

  Example: "They often don't know how to crawl"

• verb:   show submission or fear