Cringle

A cringle is an eye through which to pass a rope.

In nautical settings, the word refers to a small hole anywhere along the edge or in the corner of a sail, rimmed with stranded cordage and worked into the boltrope.

[1] Typically it encloses a metal grommet for reinforcement and to reduce wear.

In this context, cringle and grommet coincide enough that the two are sometimes used interchangeably.

[2][3] This article related to water transport is a stub.