thumbprint
thumbp·rint
noun
1.
fingerprint made by the thumb (especially by the pad of the thumb)
Origin
From thumb + print.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.