Definition of hobbits:
(n) :
A member of a fictional race of small humanoids with shaggy hair and hairy feet.
(n) :
An extinct species of hominin, Homo floresiensis, with a short body and relatively small brain, fossils of which have been recovered from the Indonesian island of Flores.
(n) :
(humorous) A person of short stature.
(n) :
(US, slang, uncommon) A socially unappealing, overly academic student.
(n) :
A Welsh unit of weight, equal to four Welsh pecks, or 168 pounds.
(n) :
(archaic) An old unit of volume (2+¹⁄₂ bushels, the volume of 168 pounds of wheat).