(1):

(n.) An assistant in a shop or store.

(2):

(n.) A man who could read; a scholar; a learned person; a man of letters.

(3):

(n.) A parish officer, being a layman who leads in reading the responses of the Episcopal church service, and otherwise assists in it.

(4):

(n.) One employed to keep records or accounts; a scribe; an accountant; as, the clerk of a court; a town clerk.

(5):

(n.) A clergyman or ecclesiastic.