retinaculum

A band or bandlike structure that holds an organ or a part in place.

In entomology: An arrangement of hooks, or of hooks and bristles, whereby the fore and hind wings of insects are interlocked when in flight.

In botany: A viscid gland belonging to the stigma of orchids and asclepiads. and holding the pollen-masses fast.

The persistent and indurated hook-like funiculus of the seeds in most Acanthaceæ. A. Gray.

In anatomy, a restraining band; a bridle or frenum: applied to such fibrous structures as those which bind down the tendons of muscles; also to the bridle of the ileocæcal valve.