Claim
Middle English: from Old French claime (noun), clamer (verb), from Latin clamare ‘call out’.
wiktionary
From Middle English claimen, borrowed from Old French clamer(“to call, name, send for”), from Latin clāmō, clāmāre(“to call, cry out”), from Proto-Indo-European *kelh₁-(“to shout”), which is imitative; see also Lithuanian kalba(“language”), Old English hlōwan(“to low, make a noise like a cow”), Old High German halan(“to call”), Ancient Greek καλέω(kaléō, “to call, convoke”), κλέδον(klédon, “report, fame”), κέλαδος(kélados, “noise”), Middle Irish cailech(“cock”), Latin calō(“to call out, announce solemnly”), Sanskrit उषःकल(uṣaḥkala, “cock”, literally “dawn-calling”). Cognate with Spanish llamar and clamar.
etymonline
claim (v.)
c. 1300, "to call, call out; to ask or demand by virtue of right or authority," from accented stem of Old French clamer "to call, name, describe; claim; complain; declare," from Latin clamare "to cry out, shout, proclaim," from PIE root *kele- (2) "to shout." Related: Claimed; claiming.
Meaning "to maintain as true, assert a belief or opinion" is from 1864 ("A common use, regarded by many as inelegant" - Century Dictionary, 1895); claim properly should not stray too far from its true meaning of "to demand recognition of a right." Specific sense "to make a claim" (on an insurance company) is from 1897.
claim (n.)
early 14c., "a demand of a right; right of claiming," from Old French claime "claim, complaint," from clamer (see claim (v.)). Meaning "thing claimed or demanded" is from 1792; specifically "piece of land allotted and taken" (chiefly U.S. and Australia, in reference to mining); claim-jumper is attested from 1839. Insurance sense "application for guaranteed compensation" is from 1878.
