1. To dig; to open (the ground) as with a spade. Delve of convenient depth your thrashing floo (Dryden)
2. To dig into; to penetrate; to trace out; to fathom. I can not delve him to the root. (Shak)
Origin: as. Delfan to dig; akin to os. Bidelban to bury, D. Delven to dig, MHG. Telben, and possibly to E. Dale. Cf. Delf a mine.