Boyd’s Bible Dictionary:

(assistant). Attendant (Ex. 24:1313And Moses rose up, and his minister Joshua: and Moses went up into the mount of God. (Exodus 24:13); Josh. 1:11Now after the death of Moses the servant of the Lord it came to pass, that the Lord spake unto Joshua the son of Nun, Moses' minister, saying, (Joshua 1:1); 1 Kings 19:2121And he returned back from him, and took a yoke of oxen, and slew them, and boiled their flesh with the instruments of the oxen, and gave unto the people, and they did eat. Then he arose, and went after Elijah, and ministered unto him. (1 Kings 19:21); Ezra 8:1717And I sent them with commandment unto Iddo the chief at the place Casiphia, and I told them what they should say unto Iddo, and to his brethren the Nethinims, at the place Casiphia, that they should bring unto us ministers for the house of our God. (Ezra 8:17)). Magistrate (Rom. 13:66For for this cause pay ye tribute also: for they are God's ministers, attending continually upon this very thing. (Romans 13:6)). Preacher and teacher (1 Cor. 4:11Let a man so account of us, as of the ministers of Christ, and stewards of the mysteries of God. (1 Corinthians 4:1); 2 Cor. 3:66Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life. (2 Corinthians 3:6)). Celestial high priest (Heb. 8:1-31Now of the things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens; 2A minister of the sanctuary, and of the true tabernacle, which the Lord pitched, and not man. 3For every high priest is ordained to offer gifts and sacrifices: wherefore it is of necessity that this man have somewhat also to offer. (Hebrews 8:1‑3)).

Concise Bible Dictionary:

1. διάκονος. See DEACON.

Strong’s Dictionary of Greek Words:

from 3011; to be a public servant, i.e. (by analogy) to perform religious or charitable functions (worship, obey, relieve)
KJV Usage: