GNU Collaborative International Dictionary of English

Found one definition

1.       
   Allegation , 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.]
   The act of alleging or positively asserting.
   1913 Webster
   That which is alleged, asserted, or declared; positive assertion; formal averment
   1913 Webster
   I thought their allegation but reasonable.
   Steele.
   
   1913 Webster
   (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.
   1913 Webster