n an upward slope or grade (as in a road)
n software that provides better performance than an earlier version did
n a reservation that is improved
n the property possessed by a slope or surface that rises
n hardware that provides better performance than an earlier version did
n the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)
v rate higher; raise in value or esteem
v to improve what was old or outdated
v give a promotion to or assign to a higher position
v get better travel conditions
v give better travel conditions to