The definition of a lanthorn is an old British word that is defined as lantern.
An example of a lanthorn is a portable lighting device which was made with reflectors which were made from translucent sheets of horn.
Origin of lanthornaltered by folk etymology from lantern, by associated, association with horn, material once used for the sides
Origin of lanthornAlteration (influenced by horn of which the sides were once made )of lantern
- (archaic) A lantern.