smacker
From Longman Dictionary of Contemporary Englishsmackersmack‧er /ˈsmækə $ -ər/ noun [countable] informal 1 PEWMONEYa pound or a dollar2 (also smackeroo /ˌsmækəˈruː/)KISS a loud kissExamples from the Corpussmacker• It would bring a windfall of around 300,000 smackers to the Manor.• It cost me fifty smackers.• Eleven-year-old Macaulay gets his first on-screen smacker from child co-star Anna Chlumsky.• One thousand smackers would come in very handy at the moment.• He planted a big, wet smacker on Jill's cheek.