From WordNet (r) 3.0 (2006):
cross adj 1: extending or lying across; in a crosswise direction; at right angles to the long axis; "cross members should be all steel"; "from the transverse hall the stairway ascends gracefully"; "transversal vibrations"; "transverse colon" [syn: cross(a), transverse, transversal, thwartwise] 2: annoyed and irritable [syn: crabbed, crabby, cross, fussy, grouchy, grumpy, bad-tempered, ill-tempered] n 1: a wooden structure consisting of an upright post with a transverse piece 2: a marking that consists of lines that cross each other [syn: crisscross, cross, mark] 3: a representation of the structure on which Jesus was crucified; used as an emblem of Christianity or in heraldry 4: any affliction that causes great suffering; "that is his cross to bear"; "he bears his afflictions like a crown of thorns" [syn: cross, crown of thorns] 5: (genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species; "a mule is a cross between a horse and a donkey" [syn: hybrid, crossbreed, cross] 6: (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids [syn: hybridization, hybridisation, crossbreeding, crossing, cross, interbreeding, hybridizing] v 1: travel across or pass over; "The caravan covered almost 100 miles each day" [syn: traverse, track, cover, cross, pass over, get over, get across, cut through, cut across] 2: meet at a point [syn: intersect, cross] 3: hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent" [syn: thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk] 4: fold so as to resemble a cross; "she crossed her legs" [ant: uncross] 5: to cover or extend over an area or time period; "Rivers traverse the valley floor", "The parking lot spans 3 acres"; "The novel spans three centuries" [syn: cross, traverse, span, sweep] 6: meet and pass; "the trains crossed" 7: trace a line through or across; "cross your `t'" 8: breed animals or plants using parents of different races and varieties; "cross a horse and a donkey"; "Mendel tried crossbreeding"; "these species do not interbreed" [syn: crossbreed, cross, hybridize, hybridise, interbreed]