noun, noun or participle which takes 'suru', intransitive verb
Refers to the act of linking little fingers to confirm a promise, often associated with the children's rhyme 指切りげんまん、嘘ついたら針千本飲ます. Used as a noun or with する.
See also: 指切りげんまん、嘘ついたら針千本飲ます · 指切り
When I was a child, I made a pinky swear with my friend and kept the promise.
「指切りげんまん、嘘ついたら針千本飲ます」と歌いながら、二人は小指を絡めた。
Singing 'Cross my heart, hope to die, swallow a thousand needles if I lie,' the two linked their little fingers.