definition of
instruction

[1] #1 instruction n. [direction] a message describing how something is to be done; "he gave directions faster than she could follow them". wn

[2] #2 instruction n. [education, teaching, pedagogy, didactics, educational activity] the activities of educating or instructing; activities that impart knowledge or skill; "he received no formal education"; "our instruction was carefully programmed"; "good classroom teaching is seldom rewarded". wn

[3] #3 instruction n. [teaching, pedagogy] the profession of a teacher; "he prepared for teaching while still in college"; "pedagogy is recognized as an important profession". wn

[4] #4 instruction n. [command, statement, program line] (computer science) a line of code written as part of a computer program. wn