Origin: 1400–50;late Middle Englishdelyvere, delyvery < Anglo-Frenchdelivrée, noun use of feminine past participle of delivrer to deliver, with suffix assimilated to -ery
late 15c., "action of handing over to another," from Anglo-Fr. delivrée, fem. pp. of délivrer (see deliver). Childbirth sense is attested from 1570s. Of speech, from 1580s. Of a blow, throw of a ball, etc., from 1702.
delivery de·liv·er·y (dĭ-lĭv'ə-rē, -lĭv'rē) n. The expulsion or extraction of a child and the fetal membranes through the birth canal into the external world.