In archaeology, a celt /ˈsɛlt/ is a long, thin, prehistoric, stone or bronze tool similar to an adze, hoe, or axe.
A shoe-last celt was a polished stone tool used during the early European Neolithic for felling trees and woodworking.
The term "celt" seems to have come about from a copyist's error in many medieval manuscript copies of Job 19:24 in the Latin Vulgate Bible, which became enshrined in the authoritative Sixto-Clementine printed edition of 1592.
The editors of the Oxford English Dictionary "[incline] to the belief that celtis was a phantom word",[2] simply a misspelling of certe.
[2][3] From the context of Job 19:24 ("Oh, that my words were inscribed with an iron tool on lead, or engraved in rock forever!