1) (a sharp-edged steel blade to be fastened to) a boot for moving smoothly over ice; to move on skates (skate)

2) (to cause a person, thing) to move smoothly over, slip along, a polished surface; to act gradually in the way mentioned without being fully aware (slide)

3) a light breeze, smell; (of a breeze, light smell etc) to carry lightly and smoothly through the air or over water (waft)