Easton's Bible Dictionary
One who serves, as distinguished from the master.
(1.) Hebrews meshereth, applied to an attendant on one of superior rank, as to Joshua, the servant of Moses (Exodus 33:11), and to the servant of Elisha (2 Kings 4:43). This name is also given to attendants at court (2 Chronicles 22:8), and to the priests and Levites (Jeremiah 33:21; Ezek. 44:11).
(3.) Greek leitourgos, a subordinate public administrator, and in this sense applied to magistrates (Romans 13:6). It is applied also to our Lord (Hebrews 8:2), and to Paul in relation to Christ (Romans 15:16).
(4.) Greek hyperetes (literally, "under-rower"), a personal attendant on a superior, thus of the person who waited on the officiating priest in the synagogue (Luke 4:20). It is applied also to John Mark, the attendant on Paul and Barnabas (Acts 13:5).
(5.) Greek diaconos, usually a subordinate officer or assistant employed in relation to the ministry of the gospel, as to Paul and Apollos (1 Corinthians 3:5), Tychicus (Ephesians 6:21), Epaphras (Colossians 1:7), Timothy (1 Thessalonians 3:2), and also to Christ (Romans 15:8).
Noah Webster's New International Dictionary of the English Language
1. (n.) A servant; a subordinate; an officer or assistant of inferior rank; hence, an agent, an instrument.
2. (n.) An officer of justice.
3. (n.) One to whom the sovereign or executive head of a government entrusts the management of affairs of state, or some department of such affairs.
4. (n.) A representative of a government, sent to the court, or seat of government, of a foreign nation to transact diplomatic business.
5. (n.) One who serves at the altar; one who performs sacerdotal duties; the pastor of a church duly authorized or licensed to preach the gospel and administer the sacraments.
6. (n.) To furnish or apply; to afford; to supply; to administer.
7. (v. i.) To act as a servant, attendant, or agent; to attend and serve; to perform service in any office, sacred or secular.
8. (v. i.) To supply or to things needful; esp., to supply consolation or remedies.