in·struct 
(
ĭn-str
ŭkt
)
v. in·struct·ed, in·struct·ing, in·structs
v.tr.1. To give orders to; direct: instructed the children to hang up their coats.
2. To provide with knowledge; to train or inform: instructed the students in algebra. See Synonyms at teach.
v.intr. To serve as an instructor.
[Middle English instructen, from Latin īnstruere, īnstrūct-, to prepare, instruct : in-, on; see IN-2 + struere, to build; see ster-2 in the Appendix of Indo-European roots.]