FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

diakoneo διακονέω — dee-ak-on-eh'-o — from 1249; to be an attendant, i.e. wait upon (menially or as a host, friend, or (figuratively) teacher); technically, to act as a Christian deacon:--(ad-)minister (unto), serve, use the office of a deacon.

see GREEK for 1249