エース

えーす
noun
ace; top player; ace (playing card)
1. ace; star player; top performer
The leading player on a sports team, or by extension the most reliable person in a group. Most commonly used for the starting pitcher in baseball.
(かれ)はチームのエースだ。
He's the ace of the team.
エース投手(とうしゅ)先発(せんぱつ)した。
The ace pitcher started the game.
営業(えいぎょう)()のエースとして大型(おおがた)案件(あんけん)次々(つぎつぎ)獲得(かくとく)している。
As the ace of the sales department, she is winning major deals one after another.
2. ace (playing card)
The ace in a deck of playing cards.
ハートのエースを()いた。
I drew the ace of hearts.
エースが二枚(にまい)(そろ)った。
I got two aces.
ポーカーではエースが一番(いちばん)(つよ)いカードとして(あつか)われる。
In poker, the ace is treated as the strongest card.

From English "ace." The sports/figurative sense is by far the more common use in everyday Japanese.

SENSE 1 (top player):

  • エース投手(とうしゅ): ace pitcher
  • チームのエース: team's ace
  • 不動(ふどう)のエース: unshakable ace; permanent fixture as ace
  • 営業(えいぎょう)のエース: top salesperson

SENSE 2 (card):

  • ハートのエース: ace of hearts
  • エースを()く: to draw an ace

SIMILAR WORDS:

  • 主力(しゅりょく): main force; key member — overlaps with sense 1 but is broader and less individual
  • 花形(はながた): star (player/performer) — more about glamour and popularity than reliability