Where does “thumbshot” come from?

thumbshot (English) comes from English thumb, from Middle English þombe, from Old English þūma, from Proto-West Germanic þūmō, from Proto-Germanic þūmô, from Proto-Indo-European tūm-, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.

thumbshot (English): A thumbnail snapshot of an electronic document;...

Definitions

  1. A thumbnail snapshot of an electronic document;...

Ancestry of “thumbshot”, step by step

thumbshot traces back through two separate lines of ancestry.

via English thumb

StepLanguageWordMeaning
1EnglishthumbThe short thick digit of the hand that for humans...
2Middle Englishþombethumb; thumb-length; big toe
3Old Englishþūmathumb
4Proto-West Germanicþūmōthumb
5Proto-Germanicþūmôthumb
6Proto-Indo-Europeantūm-to grow; to swell, to increase; to swell, be...
7Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

via English shot

StepLanguageWordMeaning
1EnglishshotWorn out or broken; Woven from warp and weft...
2Middle EnglishschotA missile or projectile; a thrown or fired weapon
3Old EnglishScotshot, act of shooting
4Old Norseskot
5Proto-Germanicskutąshot
6Proto-Indo-European(s)kewd-to advance, push; to drive, propel
Every word from Proto-Indo-European tewh₂-Every word from Proto-Indo-European tūm-Every word from Proto-Germanic þūmô