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Jyutping lou5 daai2
Pinyin lǎo dà

Definitions (粵典–words.hk)
  1. 名詞
    一家​之中​年紀​最大​嗰​個​仔
    eldest brother or child
  2. 名詞
    幫派​首領
    leader of a gangster
  3. 名詞
    一個​行業​之中​輩份​最高​嗰​個​人
    respectful address for the master of a trade or an experienced person
    • 佢係呢行嘅老大,個個都好尊敬佢㗎。
      佢系呢行嘅老大,个个都好尊敬佢㗎。
      He's the leader in this profession. Everyone respects him very much.

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Jyutping lou5 daai6
Pinyin lǎo dà

Definitions (CC-CEDICT)
  1. old age
  2. very
  3. eldest child in a family
  4. leader of a group
  5. boss
  6. captain of a boat
  7. leader of a criminal gang
Definitions (Wiktionary)
  1. adj, literary
    old (in age)
    (syn.) 年歲大, 年长, 垂老, 苍老, 年長, 老, 下架, 衰老, 年紀大, 老邁, 年老, 蒼老, 年纪大, 老迈
  2. noun
    eldest among the siblings
  3. noun
    chief; boss; leader; ringleader
  4. noun, dialectal
    chief crewman of a boat
  5. adv, colloquial, usually, with-negation
    very
    (syn.) 极度, 很, 頗, 不要太, 孔, 異常, 超, 滚, 极端, 滾, 坏, 十分, 非常, 颇, 壞, 极为, 極度, 極端, 异常, 極其, 极其, 極為
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #2533
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    老大哥在看着你。
    老大哥在看着你。
    lǎo dà gē zài kàn zhe nǐ 。
    • Big Brother is watching you.
Examples (粵典–words.hk)
  1. Cantonese
    呢个古老大钟好值钱。
    呢個古老大鐘好值錢。
    ni1 go3 gu2 lou5 daai6 zung1 hou2 zik6 cin2.
    • This antique clock is worth a lot.
  2. Cantonese
    老大
    老大
    lou5 daai2
    • the eldest; the leader
  3. Cantonese
    你放心㖞,我哋老大牙齿当金使,佢话俾你上位佢一定会。
    你放心喎,我哋老大牙齒當金使,佢話俾你上位佢一定會。
    nei5 fong3 sam1 wo3, ngo5 dei6 lou5 daai2 ngaa4 ci2 dong3 gam1 sai2, keoi5 waa6 bei2 nei5 soeng5 wai2 keoi5 jat1 ding6 wui5.
    • Relax. Our boss keeps his word. If he said he will promote you, you will be promoted.
  4. Cantonese
    佢系呢行嘅老大,个个都好尊敬佢㗎。
    佢係呢行嘅老大,個個都好尊敬佢㗎。
    • He's the leader in this profession. Everyone respects him very much.
Examples (Wiktionary)
  1. Mandarin
    况且老大人化过多少心力呢。借了上帝的息壤,来湮洪水,虽然触了上帝的恼怒,洪水的深度可也浅了一点了。
    況且老大人化過多少心力呢。借了上帝的息壤,來湮洪水,雖然觸了上帝的惱怒,洪水的深度可也淺了一點了。
    kuàng qiě lǎo dà rén huà guò duō shào xīn lì ne . jiè le shàng dì de xī rǎng , lái yān hóng shuǐ , suī rán chù le shàng dì de nǎo nù , hóng shuǐ de shēn dù kě yě qiǎn le yī diǎn le .
    • X