Al`le*ga"tion (&?;), n. [L. allegatio, fr. allegare, allegatum, to send a message, cite; later, to free by giving reasons; ad + legare to send, commission. Cf. Allege and Adlegation.] 1. The act of alleging or positively asserting.

2. That which is alleged, asserted, or declared; positive assertion; formal averment

I thought their allegation but reasonable.
Steele.

3. (Law) A statement by a party of what he undertakes to prove, -- usually applied to each separate averment; the charge or matter undertaken to be proved.

• An assertion, especially an accusation.
  
• Jillian put forth several allegations regarding her partner in hopes of discrediting his actions.
  
• The act of alleging.