| thumb | a convex molding having a cross section in the form of a quarter of a circle or of an ellipse |
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| thumb | the part of a glove that provides a covering for the thumb |
| thumb | the thick short innermost digit of the forelimb |
| thumb | feel or handle with the fingers |
| thumb | travel by getting free rides from motorists |
| thumb | look through a book or other written material |
| thumb | one of a series of rounded notches in the fore edge of a book to indicate sections |
| thumb | (of pages) worn or soiled by thumb and fingers by frequent handling or turning |
| thumb | a finger hole made to fit the thumb (as in a bowling ball) |
| thumb | the hole in a woodwind that is closed and opened with the thumb |
| thumb | the nail of the thumb |
| thumb | nut with winglike projections for thumb and forefinger leverage in turning |