n. (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

n. (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"

n. a wooden structure consisting of an upright post with a transverse piece

n. a representation of the structure on which Jesus was crucified; used as an emblem of Christianity or in heraldry

n. a marking that consists of lines that cross each other

v. 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"

v. travel across or pass over; "The caravan covered almost 100 miles each day"

v. meet and pass; "the trains crossed"

v. trace a line through or across; "cross your `t'"

v. meet at a point

v. 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"

adj. annoyed and irritable

adj. 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"