quadrel

from The Century Dictionary.

• noun In architecture, a square stone, brick, or tile.
• noun A piece of turf or peat cut in a square form.

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

• noun Prov. Eng. A square piece of turf or peat.
• noun A square brick, tile, or the like.

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

• noun archaic A square brick or tile; a quarrel.