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.
To describe concisely.
To create a smaller representation of (a larger image).
The thin, horny, transparent plate covering the upper surface of the end of a toe.
To fasten two pieces of lumber together by applying nails or screws into both boards at an angle.