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Definition of sergeant major

sergeant major

Plural:sergeants major
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sergeant major Lexical Profile

• noun

1

A senior non-commissioned officer in the army, marines, or similar armed forces, typically serving as the chief administrative assistant of a headquarters or acting as the senior enlisted advisor.

Example

"The sergeant major inspected the newly arrived recruits on the parade ground."


2

A small, brightly striped damselfish (Abudefduf saxatilis) native to tropical and subtropical coral reefs in the Atlantic and Indo-Pacific, named for its resemblance to the striped insignia of military rank.

Example

"While snorkeling off the coast of Florida, we saw a large school of sergeant majors darting through the shallow reef."

Word Nuance & Usage

When making this noun plural, the traditional and formal form is 'sergeants major,' though 'sergeant majors' is frequently used in everyday contexts.

Word Origin & Etymology

Late 16th century: from French 'sergent-major'. Originally, it denoted an officer of a rank equivalent to a modern major, but it evolved over centuries to designate the senior non-commissioned officer of a regiment.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Sergeant major. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/sergeant major
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