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Jyutping laak6 gan2 fu3 tau4
Pinyin lēi jǐn kù tóu

Definitions (粵典–words.hk)
  1. 語句
    財困要​慳住​使​,​滅少​開支
    to cut down on expenses because of financial difficulty; to "tighten one's belt"; literally: to tighten one's waistband
  2. 近義詞
    紮炮
  3. 參看
    勒住褲頭

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Jyutping lak6 gan2 fu3 tau4
Pinyin lēi jǐn kù tóu

Definitions (CC-CANTO)
  1. lit. to tighten one's belt, meaning to reduce unnecessary spending to save more for living expenses
Definitions (Wiktionary)
  1. phrase, idiomatic
    financial austerity; cost-cutting; consequence or measure of being financially poor
    (syn.) 勒緊褲帶
    • 由於父親的收入減少,全家人將要勒緊褲頭過活。
      由于父亲的收入减少,全家人将要勒紧裤头过活。
      yóu yú fù qīn de shōu rù jiǎn shào , quán jiā rén jiāng yào lè jǐn kù tóu guò huó .
      Due to reduced income of (our) father, our whole family will need to live at reduced expense.
Examples (Wiktionary)
  1. Mandarin
    由于父亲的收入减少,全家人将要勒紧裤头过活。
    由於父親的收入減少,全家人將要勒緊褲頭過活。
    yóu yú fù qīn de shōu rù jiǎn shào , quán jiā rén jiāng yào lè jǐn kù tóu guò huó .
    • Due to reduced income of (our) father, our whole family will need to live at reduced expense.