κλειδί — meaning in English

kleidi

English meaning

key noun A shaped piece of metal used to open or lock a particular lock.
spanner noun A hand tool used to grip and turn nuts and bolts (called a "wrench" in American English).

κλειδί is used for these senses in English:

clef (music) A symbol found on a musical staff that indicates the pitches represented by the lines and the spaces on the staff [from Template:SAFESUBST: c.]
key In instruments with a keyboard such as an organ or piano, one of the levers, or especially the exposed front end of it, which are depressed to cause a particular sound or note to be produced.
key (music) A scale or group of pitches constituting the basis of a musical composition.
spanner (Commonwealth, UK, Irish) A hand tool for adjusting nuts and bolts.

noun A shaped piece of metal used to open or lock a particular lock.
noun The single most important factor or step needed to achieve something.
noun One of the buttons pressed to type on a keyboard or play a musical instrument.
noun A short guide listing what the symbols, colours, or abbreviations on a map, chart, or test mean.
noun In music, the set of related notes a piece is built around, giving it its overall tonal centre.

noun A hand tool used to grip and turn nuts and bolts (called a "wrench" in American English).
noun An unexpected problem or obstacle, especially in the phrase "a spanner in the works."