from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having masts smaller than the usual size.
from the GNU version of the Collaborative International Dictionary of English
- adj. Having masts smaller than the usual dimension; -- said of vessels.
from The Century Dictionary and Cyclopedia
- Inadequately or insufficiently masted: noting a ship when the masts are either too small or too short, so that she cannot spread the sail necessary to give her the speed of which she might be capable.
under- + masted (Wiktionary)
She was much undermasted and undersailed, yet she went well through the water, considering that she was very foul.