noun
Refers to a very small person, often in a folkloric or fairy-tale context. Can be used figuratively for someone of extremely short stature.
彼はまるで一寸法師のように小柄だ。
He is as small as a dwarf.
noun
Issun-bōshi (Japanese fairytale)
Proper noun referring to the titular character of the Japanese folktale 'Issun-bōshi', a boy only one sun (about 3 cm) tall who goes on adventures.
一寸法師はお椀の船に乗って旅に出た。
Issun-bōshi set out on a journey in a boat made from a bowl.