Aids

n. (also AIDS) acquired immune deficiency syndrome, an often fatal viral syndrome marked by severe loss of resistance to infection. [abbreviation] ail v. 1 archaic (only in 3rd person interrog. or indefinite constructions) trouble or afflict (what ails him?). 2 (usu. be ailing) be ill. [Old English] aileron ella,rnrif n. hinged flap on an aeroplane wing. [French aile wing] ailing adj. 1 ill. 2 in poor condition. ailment n. minor illness or disorder. aim v. 1 intend or try; attempt (aim at winning; aim to win). 2 (usu. foil. by at) direct or point (a weapon, remark, etc.). 3 take aim. n. 1 purpose or object. 2 the directing of a weapon etc. at an object.