What is Thumbnail?
1.
the little pictures that make looking at porn so much easier and simplier
i looked at all the thumbnails of the dirty bitch
2.
1 - The nail of the thumb
2 - Something that is small or brief; concise
3 - A printing; small and rough
1 - Look at Joe's bleeding thumbnail!
2 - Jane quickly wrote a thumbnail summary of the chapter she had read.
3 - Bob drew a thumbnail sketch of his idea before he started his actual picture.
See