sluther,v.dial.|ˈslʌðə(r)| [var. of slither v.] intr. To slide, slip. 1796Pegge DerbicismsSer. ii. 122 Slither, or Sluther, to slide; to slip.1854A. E. Baker Northampt. Gloss.s.v., Sluther down the hill.1888Dalby Mayroyd II. 165 He..wriggled his body, and was about to ‘sluther’ down.