drengage

from The Century Dictionary.

• noun The tenure by which a dreng held land.
• noun The quantity of land, usually sixteen acres, to be plowed, sown, and harrowed by a dreng.

from the GNU version of the Collaborative International Dictionary of English.

• noun (O. Eng. Law), obsolete The tenure by which a drench held land.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun obsolete, law, UK The tenure by which a drench held land.