pollicitation

from The Century Dictionary.

• noun A promise; a voluntary engagement; also, a paper containing such an engagement.
• noun In civil law, a promise without mutuality; a promise not yet accepted by the person to whom it is made.

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

• noun A voluntary engagement, or a paper containing it; a promise.
• noun (Roman Law) A promise without mutuality; a promise which has not been accepted by the person to whom it is made.

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

• noun A voluntary engagement, or a paper containing it; a promise.
• noun Roman law A promise without mutuality; a promise which has not been accepted by the person to whom it is made.