n. 义务, 责任, 约束, 契约, 恩惠, 债务

[经] 待付款, 债务, 义务

Obligation \Ob"li*ga"tion\, n. [F. obligation. L. obligatio. See
{Oblige}.]
1. The act of obligating.

2. That which obligates or constrains; the binding power of a
promise, contract, oath, or vow, or of law; that which
constitutes legal or moral duty.

A tender conscience is a stronger obligation than a
proson. --Fuller.

3. Any act by which a person becomes bound to do something to
or for another, or to forbear something; external duties
imposed by law, promise, or contract, by the relations of
society, or by courtesy, kindness, etc.

Every man has obligations which belong to his
station. Duties extend beyond obligation, and direct
the affections, desires, and intentions, as well as
the actions. --Whewell.

4. The state of being obligated or bound; the state of being
indebted for an act of favor or kindness; -- often used
with under to indicate being in that state; as, to place
others under obligations to one.

5. (Law) A bond with a condition annexed, and a penalty for
nonfulfillment. In a larger sense, it is an acknowledgment
of a duty to pay a certain sum or do a certain things.

{Days of obligation}. See under {Day}.

{under obligation}, {under an obligation}. in a state of
obligation[4].
[1913 Webster +PJC]