Delve

Webster's Dictionary of the English Language

·vt A place dug; a pit; a ditch; a den; a cave.

II. Delve ·vt To Dig; to open (the ground) as with a spade.

III. Delve ·vi To dig or labor with a spade, or as with a spade; to labor as a drudge.

IV. Delve ·vt To dig into; to Penetrate; to trace out; to Fathom.