"seed covering," from O.E. hulu, from P.Gmc. *khulus "to cover" (cf. O.H.G. hulla, hulsa). The verb was in M.E.; hulled can mean both "having a particular kind of hull" and "stripped of the hull."
"body of a ship," 1571, perhaps from hull (1) on fancied resemblance of ship keels to open peapods (cf. L. carina "keel of a ship," originally "shell of a nut;" Gk. phaselus "light passenger ship, yacht," lit. "bean pod;" Fr. coque "hull of a ship, shell of a walnut or egg"). Alternative etymology is from M.E. hoole "ship's keel" (c.1440), from the same source as hold (n.).