Merriam-Webster's Collegiate® Dictionary, 11th Edition
SLED
I. noun
Etymology: Middle English sledde, from Middle Dutch; akin to Old English slīdan to slide
Date: 14th century
a vehicle usually on runners for transportation especially on snow or ice, rocket sled ,
II. verb (sledded; sledding)
Date: 1706
transitive verb sledge , intransitive verb to ride on a sled or sleigh, sledder noun