WordWeb Online

1. Lying or extending across the length of a thing or in a cross direction
   "a crosswise street"; "the crosswise dimension"
    
2. In the shape of (a horizontal piece on) a cross

1. Not in the intended manner
   "things are going crosswise"
    
2. Transversely
   - across, crossways

See also: cross, cross-section, cross-sectional, horizontal, thwartwise, transversal, transverse

Antonym: lengthwise

Encyclopedia: Crosswise