from The Century Dictionary.
- noun In ship-building, a bow the shape of which bears a general resemblance to the bowl of a spoon. Whale-back steamers of the Great Lakes and some yachts have such bows.
Sorry, no etymologies found.
I offered again to take the sculls, but she took no notice and rowed on, so that I was a silent passenger on the stem seat till we reached her boat, a spruce little yacht's gig, built to the native model, with a spoon-bow and tiny lee-boards.