chawed
Webster's Dictionary (GCIDE)
1.To grind with the teeth; to masticate, as food in eating; to chew, as the cud; to champ, as the bit. [1913 Webster]
The trampling steed, with gold and purple trapped, Chawing the foamy bit, there fiercely stood.— Surrey.[1913 Webster]
2.To ruminate in thought; to consider; to keep the mind working upon; to brood over. --Dryden. [1913 Webster]
Note: A word formerly in good use, but now regarded as vulgar. [1913 Webster]