noun, noun which may take the genitive case particle 'no'
between the fingers; interdigital (hand)
Only when written 指間
Specifically refers to the space between fingers of the hand. Often used in medical or descriptive contexts.
指間の皮膚が荒れやすい。
The skin between the fingers tends to get rough easily.
指間部に湿疹ができた。
I developed eczema in the interdigital area of my hand.
noun
between the toes; interdigital (foot)
Refers to the space between toes. Can be written with either 指間 or 趾間, though 趾間 is more specific to feet.
水虫は指間によくできる。
Athlete's foot often develops between the toes.
足の指間を清潔に保つことが大切だ。
It is important to keep the spaces between your toes clean.
Compound of 指 (finger/toe) and 間 (space, interval). The reading しかん is the on'yomi of both characters. The variant 趾間 uses 趾 (toe/foot) for anatomical precision.