instruction
Pronunciation: /ɪnˈstrʌkʃ(ə)n/
noun
- 1 (often instructions) a direction or order: he issued instructions to the sheriff he was acting on my instructions
- (instructions) Law directions to a solicitor or counsel, or to a jury.
- Computing a code in a program which defines and carries out an operation.

Origin:
late Middle English: via Old French from late Latin instructio(n-), from the verb instruere (see instruct)