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
   "She laid the boards crosswise to create a sturdy platform"; "The crosswise pattern on the fabric was eye-catching"

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

See also: cross, cross-sectional, horizontal, thwartways [archaic], thwartwise [archaic], transversal, transverse

Antonym: lengthways

Encyclopedia: Crosswise