Circumstance (n.) That which attends, or relates to, or in some way affects, a fact or event; an attendant thing or state of things.

Circumstance (n.) An event; a fact; a particular incident.

Circumstance (n.) Circumlocution; detail.

Circumstance (n.) Condition in regard to worldly estate; state of property; situation; surroundings.

Circumstance (v. t.) To place in a particular situation; to supply relative incidents.