thumbnail — English Dictionary

Noun

1. The fingernail on the thumb.

2. A rough sketch (e.g., the size of one's thumbnail).

3. A small picture, used as a compact representation of a larger image.

4. A small picture representing a post or a video in a list.

Verb

1. To describe concisely.

   Usage

   • Transitive

2. To create a smaller representation of (a larger image).

   Usage

   • Transitive

Noun

1. the nail of the thumb

   Broader terms

   fingernail