Pertaining to the middle voice.
Located in the middle; in between.
Central.
A centre, midpoint.
The part between the beginning and the end.
The middle stump.
The central part of a human body; the waist.
The middle voice.
To form a rim on.
To roll around a rim.
To lick the anus of a partner as a sexual act.
To follow the contours, possibly creating a circuit.
A wheelrim.
An edge around something, especially when circular.
A membrane.
A semicircular copydesk.