lining

US /ˈlaɪ.nɪŋ/
UK /ˈlaɪ.nɪŋ/
"lining" picture
1.

a layer of material covering the inner surface of something

:
The coat has a silk lining.
She sewed a new lining into her handbag.
2.

a coating or layer on an inner surface of a body organ or cavity

:
The stomach has a protective mucous lining.
Inflammation of the lining of the lungs can cause severe pain.