What is the meaning of Sergeant?

A UK army rank with NATO code OR-6, senior to corporal and junior to warrant officer ranks.

The highest rank of noncommissioned officer in some non-naval military forces and police.

A lawyer of the highest rank, equivalent to the doctor of civil law.

A title sometimes given to the servants of the sovereign.

A bailiff.

A servant in monastic offices.

A fish, the píntano (Abudefduf saxatilis), a species of damselfish.

Any of various nymphalid butterflies of the genus Athyma; distinct from the false sergeants.

sergeant (non-commissioned officer in several armed forces)

alternative form of serjaunt

Source: wiktionary.org