WordNet sense 1 (a horizontal beam that extends across something):

crossbeam, crosspiece, trave

WordNet sense 2 (a horizontal crosspiece across a window or separating a door from a window over it):

transom

WordNet sense 3 (to cover or extend over an area or time period):

cross, span, sweep

WordNet sense 4 (travel across or pass over):

cover, track, cut across, get across, get over, pass over, cut through

WordNet sense 5 (deny formally (an allegation of fact by the opposing party) in a legal suit):

deny

WordNet sense 6 (taking a zigzag path on skis):

traversal