from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To raise an anchor or to free a vessel from an anchor.
- v. To liberate.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To loose from the anchor, as a ship.
from The Century Dictionary and Cyclopedia
- To loose from anchorage.
- To become loose from anchorage; become detached.
un- + anchor (Wiktionary)