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Jyutping lok6 fun2
Pinyin luò kuǎn

Definitions (CC-CEDICT)
  1. inscription with name, date, or short sentence, on a painting, gift, letter etc
  2. to write such an inscription
Definitions (Wiktionary)
  1. verb
    to write the names of the sender and recipient, the date, and other text on a painting, gift, or letter; to inscribe (a gift, etc.)
  2. noun
    names, date, and other information written on a work