4. (noun)cross, crown of thorns any affliction that causes greatsuffering "that is his cross to bear"; "he bears his afflictions like a crown of thorns"
5. (noun)hybrid, crossbreed, cross (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"
6. (noun)hybridization, hybridisation, crossbreeding, crossing, cross, interbreeding, hybridizing (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
7. (adj)cross(a), transverse, transversal, thwartwise 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"
9. (verb)traverse, track, cover, cross, pass over, get over, get across, cut through, cut across travel across or passover "The caravan covered almost 100 miles each day"
11. (verb)thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk hinder or prevent (the efforts, plans, or desires) of
"What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
12. (verb)cross fold so as to resemble a cross "she crossed her legs"
13. (verb)cross, traverse, span, sweep to cover or extend over an area or timeperiod "Rivers traverse the valley floor", "The parking lot spans 3 acres"; "The novel spans three centuries"
14. (verb)cross meet and pass "the trains crossed"
15. (verb)cross trace a line through or across
"cross your `t'"
16. (verb)crossbreed, cross, hybridize, hybridise, interbreed 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"