1. (a.) Sly.

2. (n.) A vehicle moved on runners, and used for transporting persons or goods on snow or ice; -- in England commonly called a sledge.

Skimobile Sno-Cat blade coast flit flow fly glide glissade ice-skate roller-skate runner sail sideslip skate skateboard ski skid skim sled slide slip slither snowmobile sweep toboggan weasel