(~s)
1.
The ~ of a container such as a cup or glass is the edge that goes all the way round the top.
She looked at him over the ~ of her glass.
N-COUNT: usu with supp
2.
The ~ of a circular object is its outside edge.
...a round mirror with white metal ~.
N-COUNT: usu with supp
3.
see also ~med , -~med