[--]

Jyutping sik1 ci4
Pinyin xī shi

Definitions (Wiktionary)
  1. verb, Cantonese
    to turn off a vehicle's engine
    • 停車熄匙
      停车熄匙
      ting4 ce1 sik1 ci4
      to stop a vehicle and turn the engine off

[--]

Jyutping sik1 si4
Pinyin xī shi

Definitions (粵典–words.hk)
  1. 動詞
    熄汽車​引擎
    to turn off the ignition (of a car)
    • 停車熄匙
      停车熄匙
      ting4 ce1 sik1 si4
      park and turn off the ignition
Definitions (Kaifangcidian)
  1. 把引擎關掉 – 把引擎关掉

[--]

Jyutping sik1 ci4
Pinyin xī chí

Definitions (CC-CANTO)
  1. to turn off the engine for a car
Examples (粵典–words.hk)
  1. Cantonese
    停车熄匙
    停車熄匙
    ting4 ce1 sik1 si4
    • park and turn off the ignition
  2. Cantonese
    熄匙,车牌,身份证!
    熄匙,車牌,身份證!
    sik1 si4, ce1 paai4, san1 fan2 zing3!
    • Switch off the engine, (show me your) driving licence and ID card!
Examples (Wiktionary)
  1. Cantonese
    停车熄匙
    停車熄匙
    ting4 ce1 sik1 ci4
    • to stop a vehicle and turn the engine off