1. In a horizontal direction
   "a gallery quite often is added to make use of space vertically as well as horizontally"

See also: horizontal

• horned whiff
• Horneophyton
• Horner's syndrome
• hornet
• hornets' nest
• Horney
• hornfels
• horniness
• hornist
• hornless
• hornlike
• hornpipe
• war-worn
• waratah
• warble
• warble fly
• warbler
• Warburg
• ward
• ward off
• ward-heeler
• warden
• wardenship
• warder
• wardership