1 (often in pl.) a direction; an order (gave him his instructions).
2 teaching; education (took a course of instruction).
3 Law (in pl.) directions to a solicitor or counsel.
4 Computing a direction in a computer program defining and effecting an operation.
Derivatives:
instructional adj.
Etymology: ME f. OF f. LL instructio -onis (as INSTRUCT)
Useful english dictionary. 2012.