thumbnail

Meanings

Noun

• 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.

Verb

• To describe concisely.
• To create a smaller representation of (a larger image).

Origin

• From . The phrase thumbnail sketch was first attested 1852. Verb sense attested 1930s.