avain — meaning in English

English meaning

clef noun A symbol placed at the start of a musical staff that shows which pitches the lines and spaces represent.
code noun Instructions written in a programming language that a computer can run.
key noun A shaped piece of metal used to open or lock a particular lock.

avain 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.]
code A set of rules for converting information into another form or representation.
key Indispensable, supremely important.
key Important, salient.
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.
key (historical) A manual electrical switching device primarily used for the transmission of Morse code.
key (cryptography) A piece of information (e.g., a password or passphrase) used to encode or decode a message or messages.

noun Instructions written in a programming language that a computer can run.
noun A system of symbols or signals used to represent information secretly or compactly.
noun A formal set of laws, rules, or principles governing a subject or group.
verb To write instructions for a computer program.