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key3 [transitive]
1 American English informal if you key a win for your team, you help it win a game because you play very well :
Abdul keyed the game with three touchdowns.
Abdul keyed the game with three touchdowns.2 British EnglishTIC to prepare a surface so that a covering such as paint will stick to it
key something ↔ in
phrasal verbTDTD to put information into a computer or other machine, using buttons or a keyboard :
Key in your password and press 'Return'.
Key in your password and press 'Return'.key something to something
phrasal verb1 to make or change a system so that it works well with something else :
The daycare hours are keyed to the needs of working parents.
The daycare hours are keyed to the needs of working parents.2 if the level, price, or value of something is keyed to something else, it is related to it and they rise and fall at the same time :
Pensions are keyed to the rate of inflation.
Pensions are keyed to the rate of inflation.