Cross  —n. 1 upright post with a transverse bar, as used in antiquity for crucifixion. 2 a (the cross) cross on which christ was crucified. B representation of this as an emblem of christianity. C = *sign of the cross. 3 staff surmounted by a cross, carried in a religious procession. 4 thing or mark like a cross, esp. Two short intersecting lines (+ or x). 5 cross-shaped military etc. Decoration. 6 a hybrid. B crossing of breeds etc. 7 (foll. By between) mixture of two things. 8  crosswise movement, pass in football, etc. 9 trial or affliction. —v. 1 (often foll. By over) go across. 2 intersect; (cause to) be across (roads cross; cross one's legs). 3 a draw line(s) across. B mark (a cheque) with two parallel lines to indicate that it cannot be cashed. 4 (foll. By off, out, through) cancel etc. By drawing lines across. 5 (often refl.) Make the sign of the cross on or over. 6 a pass in opposite or different directions. B (of letters etc.) Be sent at the same time. C (of telephone lines) be connected to an unwanted conversation. 7 a cause to interbreed. B cross-fertilize (plants). 8 oppose or thwart (crossed in love). —adj. 1 (often foll. By with) peevish, angry. 2 (usu. Attrib.) Transverse; reaching from side to side. 3 (usu. Attrib.) Intersecting. 4 (usu. Attrib.) Contrary, opposed, reciprocal.  at cross purposes misunderstanding; conflicting. Cross one's fingers (or keep one's fingers crossed) 1 put one finger across another to ward off bad luck. 2 trust in good luck. Cross one's heart make a solemn pledge, esp. By crossing one's front. Cross one's mind occur to one, esp. Transiently. Cross swords (often foll. By with) argue or dispute. Cross wires (or get one's wires crossed) 1 become wrongly connected by telephone. 2 have a misunderstanding. On the cross diagonally.  crossly adv. Crossness n. [latin crux]