(France): A member of the Chamber of Deputies, formerly called Corps Législatif
(Ireland): a member of Dáil Éireann, or the title of a member of Dáil Éireann. (Normally capitalised in both cases)
(United States): a law enforcement officer who works for the county sheriff's office; a deputy sheriff or sheriff's deputy; the entry level rank in such an agency
(mining, historical) A person employed to install and remove props, brattices, etc. and to clear gas, for the safety of the miners.
One appointed as the substitute of others, and empowered to act for them, in their name or their behalf; a substitute in office