COMPLAIN v.
To give utterance to expression of grief, pain, censure, regret. etc.; to lament; to murmur; to find fault; -- commonly used with of. Also, to creak or squeak, as a timber or wheel. O lose of sight, of three I most complain! Milton.
COMPLAINT n. 2 definitions
Expression of grief, regret, pain, censure, or resentment; lamentation; murmuring; accusation; fault-finding. I poured out my complaint before him. Ps. cxlii. 2. Grievous complaints of you. Shak.