From The Collaborative International Dictionary of English v.0.48:
Cob \Cob\, v. t. [imp. & p. p. Cobbed; p. pr. & vb. n. Cobbing.] 1. To strike [Prov. Eng.] --Halliwell. [1913 Webster]
2. (Mining) To break into small pieces, as ore, so as to sort out its better portions. --Raymond. [1913 Webster]
3. (Naut.) To punish by striking on the buttocks with a strap, a flat piece of wood, or the like. [1913 Webster] Cobaea
From The Collaborative International Dictionary of English v.0.48:
Cobbing \Cob"bing\, a. Haughty; purse-proud. See Cob, n., 2. [Obs.] --Withals (1608). [1913 Webster]