leader

American  

[lee-der] / ˈli dər /

noun

1. a person or thing that leads.

2. a guiding or directing head, as of an army, movement, or political group.

3. Music.

   1. a conductor or director, as of an orchestra, band, or chorus.

   2. the player at the head of the first violins in an orchestra, the principal cornetist in a band, or the principal soprano in a chorus, to whom any incidental solos are usually assigned.

4. a featured article of trade, especially one offered at a low price to attract customers.

5. Journalism.

   1. leading article.

   2. Also called leading article.  British. the principal editorial in a newspaper.

6. blank film or tape at the beginning of a length of film or magnetic tape, used for threading a motion-picture camera, tape recorder, etc.

7. Angling.

   1. a length of nylon, silkworm gut, wire, or the like, to which the lure or hook is attached.

   2. the net used to direct fish into a weir, pound, etc.

8. a pipe for conveying rainwater downward, as from a roof; downspout.

9. a horse harnessed at the front of a team.

10. Printing. leaders, a row of dots or a short line to lead the eye across a space.

11. Nautical. lead.

12. a duct for conveying warm air from a hot-air furnace to a register or stack.

13. Mining. a thin vein of ore connected with a large vein.

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leader British  

/ ˈliːdə /

noun

1. a person who rules, guides, or inspires others; head

2. music

   1. Also called (esp US and Canadian): concertmaster.  the principal first violinist of an orchestra, who plays solo parts, and acts as the conductor's deputy and spokesman for the orchestra

   2. a conductor or director of an orchestra or chorus

3. 1. the first man on a climbing rope

   2. the leading horse or dog in a team

4. an article offered at a sufficiently low price to attract customers See also loss leader

5. a statistic or index that gives an advance indication of the state of the economy

6. Also called: leading article.  the leading editorial in a newspaper

7. angling another word for trace 2 cast

8. nautical another term for fairlead

9. a strip of blank film or tape used to facilitate threading a projector, developing machine, etc, and to aid identification

10. (plural) printing rows of dots or hyphens used to guide the reader's eye across a page, as in a table of contents

11. botany any of the long slender shoots that grow from the stem or branch of a tree: usually removed during pruning

12. a member of the Government having primary authority in initiating legislative business (esp in the phrases Leader of the House of Commons and Leader of the House of Lords )

13. the senior barrister, usually a Queen's Counsel, in charge of the conduct of a case Compare junior

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Other Word Forms

• leaderless adjective
• subleader noun

Etymology

Origin of leader

First recorded in 1250–1300; Middle English leder(e); lead ¹, -er ¹

Explanation

A leader is the one in the charge, the person who convinces other people to follow. A great leader inspires confidence in other people and moves them to action. A leader is the head guy or gal, the one running the show. The leader of the band calls the shots and sets the tempo for the music. A conductor is the leader of an orchestra; all musicians look to him or her to know when to begin and end playing their instruments. A president is the leader of a country whose decisions make a difference to the whole population. Martin Luther King, Jr. was a leader of the Civil Rights Movement. A leader comes first in line — in a parade or a social system — and gets a lot of attention, but ultimately, a leader needs followers.

Example Sentences

Plaid leader, Rhun ap Iorwerth, told BBC Wales after his party's manifesto launch that a national commission which would work on an independence White Paper would cost about £500,000.

From BBC • Apr. 12, 2026

The main opposition The Democrats party is not fielding a candidate as its leader, Renaud Agbodjo, failed to secure the required number of parliamentary endorsements needed to contest the vote.

From Barron's • Apr. 12, 2026

“Telemundo has emerged as a leader because it has modernized,” added Castañeda, a native of La Puente in Los Angeles County.

From Los Angeles Times • Apr. 11, 2026

Most crucially, Kim Il Sung built up an extraordinary cult of personality around himself that was durable enough to hand down to his son and then his grandson, the current leader Kim Jong Un.

From The Wall Street Journal • Apr. 11, 2026

Before long, a whole gaggle of geese had joined their leader, committed to staying with him, no matter what.

From "The Wild Robot Protects" by Peter Brown

Related Words

• chief
• commander
• director
• head
• manager
• officer
• ruler