練功券
lin6 gung1 gyun3lin6 gung1 hyun3liàn gōng quàninferred
English
- training money; training banknote; counterfeit banknote for a bank teller to practise cash counting skills (illegitimate to use and possess in Hong Kong); literally: practice coupon
粵語 — Cantonese
- 畀銀行櫃台人員用嚟練習數銀紙嘅假紙幣（喺香港使用及管有係犯法嘅）（量詞：張）
Sources: rime-cantonese, synthesized, words.hk