Noun

1. Chewing tobacco.

   When the doctor told him to quit smoking, Harvey switched to chaw, but then developed cancer of the mouth.

2. A plug or wad of chewing tobacco.

   My uncle's way to convince us not to use tobacco was to give us each a big chaw, and then get us to swallow it.

Verb

1. Nonstandard spelling of chew; to grind with the teeth; to masticate, as food in eating; to chew, as the cud; to champ, as the bit.
   • 1884, Samuel Clemens (Mark Twain), The Adventures of Huckleberry Finn

     ...the king he set down and twisted his head to one side, and chawed his tongue, and scrawled off something...

2. To steal.
   • ...some pikey's chawed my bike.