What is the meaning of Thumbnail?
The fingernail on the thumb.
A rough sketch (e.g., the size of one's thumbnail).
A small picture, used as a compact representation of a larger image.
A picture displayed by posts and videos pre-clicked conveying the matters discussed/shown in that post.
To create a smaller representation of (a larger image).
thumbnail (a miniature preview of a larger image)
Source: wiktionary.orgSearch words containing