(redirected from Ball of the thumb)
Also found in: Dictionary, Thesaurus, Medical, Financial, Encyclopedia, Wikipedia.
See: sphere
References in periodicals archive ?
Many of the actual frontier gunfighters cocked their single-actions using the ball of the thumb where it falls naturally into the big curve of a Peacemaker's hammer.
All in all, the safest gun-hand cocking technique is using the ball of the thumb in a straight-rearward movement to bring the hammer to full stand.
Padding on the palm is basically a circle, with an extension up the ball of the thumb -- protecting a shooter from abuse to all three nerve systems.