Webster's Revised Unabridged Dictionary · 1913

Complaint

Complaint (kom*plānt") , noun

[French complainte. See Complain.]

1.
Expression of grief, regret, pain, censure, or resentment; lamentation; murmuring; accusation; fault-finding.
I poured out my complaint before him. — Bible (KJV) - Psalm cxlii. 2
Grievous complaints of you. — Shakespeare
2.
Cause or subject of complaint or murmuring.
The poverty of the clergy in England hath been the complaint of all who wish well to the church. — Swift
3.
An ailment or disease of the body.
One in a complaint of his bowels. — Arbuthnot
4.
(Law) A formal allegation or charge against a party made or presented to the appropriate court or officer, as for a wrong done or a crime committed (in the latter case, generally under oath); an information; accusation; the initial bill in proceedings in equity.