底牌 [－－]

Jyutping dai2 paai2
Pinyin dǐ pái

Definitions (粵典–words.hk)
  1. 名詞
    某幾款​啤牌​遊戲​，​會派​一​啲​反轉​咗​嘅​牌​畀​每​個​玩家​，​祇​有​玩家​自己​先知​隻​牌​係​乜​，​呢​啲​就​係​底牌
    cards faced down
  2. 名詞
    秘密​手段​、​武器
    secret plan; secret strategy
    • 我仲未出我嘅底牌，你因住嚟。
      我仲未出我嘅底牌，你因住嚟。
      I haven't shown you my best. Wait for it!

底牌 [－－]

Jyutping dai2 paai4
Pinyin dǐ pái

Definitions (CC-CEDICT)
  1. cards in one's hand
  2. (fig.) undisclosed strength or information
  3. hidden trump
Definitions (Wiktionary)
  1. noun, figuratively
    last resort; final tactic
  2. noun, figuratively
    inside story; real situation (of the other side)
  3. noun
    one's hand (the cards held by the player)
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    大你一百万！你只底牌开嚟见我！
    大你一百萬！你隻底牌開嚟見我！
    • I raise 1 million ! Show you last card to me !
  2. Cantonese
    我仲未出我嘅底牌，你因住嚟。
    我仲未出我嘅底牌，你因住嚟。
    • I haven't shown you my best. Wait for it!