■ verb
1》 direct or command.
2》 teach (someone).
3》 Brit. authorize (a solicitor or barrister) to act on one's behalf.
↘(of a solicitor) inform (a barrister) about a case.
4》 give information to.
Origin
ME: from L. ~- , instruere 'construct, equip, teach', from in- 'upon, towards' + struere 'pile up'.