Finger
Part of speech: noun
Definition: One of the long extremities of the hand. A piece of food resembling such an extremity. (also finger pier) A walkway extending from a dock, an airport terminal, etc, used by passengers to board a waiting ship or aeroplane.
Part of speech: verb
Definition: To identify or point out. Ex.: put the finger on To report to or identify for the authorities, rat on, rat out, squeal on, tattle on, turn in, to finger. To poke, probe, or fondle with a finger. To use specified finger positions in producing notes on a musical instrument. To provide instructions in written music as to which fingers are to be used to produce particular notes or passages.
Example sentence: The moving finger writes, and having written moves on. Nor all thy piety nor all thy wit, can cancel half a line of it.
Thumb
Part of speech: noun
Definition: The short thick digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.The part of a slider that may be moved linearly along the slider.(Abbreviation of) thumbnail (picture).
Part of speech: verb
Definition: To touch with the thumb.To turn the pages of (a book) in order to read it cursorily.
Example sentence: For myself I hold no preferences among flowers, so long as they are wild, free, spontaneous. Bricks to all greenhouses! Black thumb and cutworm to the potted plant!