Is “Keys” a Scrabble word?

1. 1.An object designed to open and close a lock.

2. 2.An object designed to fit between two other objects (such as a shaft and a wheel) in a mechanism and maintain their relative orientation.

3. 3.A crucial step or requirement.

   “The key to solving this problem is persistence.”

1. 1.To fit (a lock) with a key.

2. 2.To fit (pieces of a mechanical assembly) with a key to maintain the orientation between them.

3. 3.To mark or indicate with a symbol indicating membership in a class.

1. 1.One of a string of small islands.

   “the Florida Keys”

1. 1.In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10-34 when expressed in units of kg⋅m2⋅s−1. Symbol: kg

2. 2.The unit of weight such that a one-kilogram mass is also a one-kilogram weight.

Synonyms: kg, kilo