cross

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

a marking that consists of lines that cross each other

(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"

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

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

meet at a point

hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"

fold so as to resemble a cross; "she crossed her legs"

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"

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"

annoyed and irritable