Lid (noun)

1. A movable top or cover for a container, such as a jar, typically made of metal, glass, or plastic.
2. A protective cover for a device, such as a camera.
3. The top or cover of a trunk, coffin, or box.

Origin:

Middle english from old english hlid, related to dutch lid, german lid, from an indo-european root meaning 'to cover'.

Examples:

1. She unscrewed the lid of the jar and sniffed the contents.
2. He removed the lid of the camera to change the battery.
3. The lid of the trunk was embossed with the family crest.
4. He removed the lid of the box and took out the present inside.
5. She carefully replaced the lid of the bottle.