crotch seam
Either:
- A vertical seam in the crotch of a pair of pantyhose.
- A horizontal seam in the crotch of a pair of panties.
- Less commonly, a seam in the crotch of some other type of clothing.
Not to be confused with cameltoe. A cameltoe and a vertical seam may look similar, but a cameltoe is not an actual seam in the clothing.