(computing) A modifier key whose main function is shifting between two or more functions of any of certain other keys (usually by pressing Shift and the other button simultaneously).

The quality of being shiftful.

A radical change in thinking from an accepted point of view to a new one, necessitated when new scientific discoveries produce anomalies in the current paradigm.

The practice of recording a broadcast with the intention of watching or listening to it later at a more convenient time.

(physics) a small difference in the transition energies of isotopes that corresponds to a given spectral line transition

(chemistry, physics) The change in the nuclear magnetic resonance frequency of a nucleus depending on its electronic environment; used in NMR spectroscopy to determine the structure of molecules.

The key on a typewriter used to select uppercase letters and certain special characters by physically moving the mechanism

(historical, US, automotive) An early mechanism that synchronized the speeds of gear wheels when changing gear in an automobile.

(automotive) That part of a gearbox involved in changing gear, including the lever and the forks attached to it. / (automotive, US, Canada) The lever or other interface a human uses to shift gears.

(US) A work shift between a day shift and a night shift, such as from 4PM to midnight, and the group of workers scheduled to work such a shift at a facility.