Princeton's WordNet

1. leader(noun)

   a person who rules or guides or inspires others

2. drawing card, loss leader, leader(noun)

   a featured article of merchandise sold at a loss in order to draw customers

Kernerman English Learner's Dictionary

1. leader(noun)ˈli dər

   sb who leads a group or activity

   the country's new leader; a great leader

2. leaderˈli dər

   sb who is first in a competition, election, etc.

   the leader in the race for the White House; a world leader in the development of technology

Wiktionary

1. leader(Noun)

   Any person or thing that leads or conducts.

2. leader(Noun)

   One who goes first.

   Follow the leader.

3. leader(Noun)

   One having authority to direct.

   We elected her team leader.

4. leader(Noun)

   One who leads a political party or group of elected party members; sometimes used in titles.

5. leader(Noun)

   A person or thing that leads in a certain field in terms of excellence, success, etc.

   The company is the leader in home remodeling in the county.

6. leader(Noun)

   A performer who leads a band, choir, or a section of an orchestra.

7. leader(Noun)

   The first violin in a symphony orchestra; the concertmaster.

8. leader(Noun)

   The dominant animal in a pack of animals, such as wolves or lions.

9. leader(Noun)

   An animal placed in advance of others, especially on a team of horse, oxen, or dogs.

10. leader(Noun)

    A fast-growing terminal shoot of a woody plant.

11. leader(Noun)

    A pipe for conducting rain water from a roof to a cistern or to the ground.

12. leader(Noun)

    The first, or the principal, editorial article in a newspaper; a leading or main editorial article; a lead story.

13. leader(Noun)

    A section of line between the main fishing line and the snell of a hook, intended to be more resistant to bites and harder for a fish to detect than the main fishing line.

14. leader(Noun)

    A piece of material at the beginning or end of a reel or roll to allow the material to the threaded or fed onto something, as a reel of film onto a projector or a roll of paper onto a rotary printing press.

15. leader(Noun)

    A loss leader or a popular product sold at a normal price.

16. leader(Noun)

    A type having a dot or short row of dots upon its face.

17. leader(Noun)

    A row of dots, periods, or hyphens, used in tables of contents, etc., to lead the eye across a space to the right word or number.

18. leader(Noun)

    A net for leading fish into a pound, weir, etc.

19. leader(Noun)

    A branch or small vein, not important in itself, but indicating the proximity of a better one.

20. leader(Noun)

    A block of hard wood pierced with suitable holes for leading ropes in their proper places.

21. leader(Noun)

    The drive wheel in any kind of machinery.

Origin: From leder, ledere, from lædere, equivalent to . Cognate with ledar, leidar, lieder, leider, Leiter, leder, ledare, leiðari.

Webster Dictionary

1. Leader(noun)

   one who, or that which, leads or conducts; a guide; a conductor

2. Leader(noun)

   one who goes first

3. Leader(noun)

   one having authority to direct; a chief; a commander

4. Leader(noun)

   a performer who leads a band or choir in music; also, in an orchestra, the principal violinist; the one who plays at the head of the first violins

5. Leader(noun)

   a block of hard wood pierced with suitable holes for leading ropes in their proper places

6. Leader(noun)

   the principal wheel in any kind of machinery

7. Leader(noun)

   a horse placed in advance of others; one of the forward pair of horses

8. Leader(noun)

   a pipe for conducting rain water from a roof to a cistern or to the ground; a conductor

9. Leader(noun)

   a net for leading fish into a pound, weir, etc. ; also, a line of gut, to which the snell of a fly hook is attached

10. Leader(noun)

    a branch or small vein, not important in itself, but indicating the proximity of a better one

11. Leader(noun)

    the first, or the principal, editorial article in a newspaper; a leading or main editorial article

12. Leader(noun)

    a type having a dot or short row of dots upon its face

13. Leader(noun)

    a row of dots, periods, or hyphens, used in tables of contents, etc., to lead the eye across a space to the right word or number

• voorloperAfrikaans
• المُتَسابِق الذي في المُقَدِّمَهArabic
• водачBulgarian
• líderPortuguese (BR)
• vedoucí závodník, -iceCzech
• der/die ErsteGerman
• leder; førende personDanish
• προπορευόμενοςGreek
• líderSpanish
• liiderEstonian
• پیشگامFarsi
• johtajaFinnish
• meneur/-euseFrench
• מַנהִיגHebrew
• नेताHindi
• predvodnikCroatian
• vezetőHungarian
• orang terdepanIndonesian
• forystumaður, e-r sem er í fararbroddiIcelandic
• leader, chi e' in testaItalian
• 先頭にある者Japanese
• 선도자Korean
• lyderis, vedlysLithuanian
• līderisLatvian
• yang berada di hadapan sekaliMalay
• koploperDutch
• leder, førstemannNorwegian
• prowadzący, liderPolish
• پیشگامPersian
• لارښود،لومړې كسPashto
• o primeiroPortuguese
• liderRomanian
• лидерRussian
• vedúci pretekár, -kaSlovak
• vodilniSlovenian
• vođaSerbian
• ledareSwedish
• คนนำThai
• lider, birinciTurkish
• 領先者Chinese (Trad.)
• лідерUkrainian
• قائد، لیڈرUrdu
• người dẫn đầuVietnamese
• 领先者Chinese (Simp.)