Green’s Dictionary of Slang

luka n.

also lookah, loogah
[SE lucre]

(UK teen) money.

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Twitter 20 May 🌐 Yoof slang word for today: 'luka', 'lookah', 'loogah': money. From 'filthy lucre' but presumed by many users to be Afro/Carib exoticism.