HSK10+
dú
writing tablet
Phonosemantic compound. 片 represents the meaning and 賣 represents the sound.
片 Meaning component
piàn, piān
slice
賣 Sound component
mài
sell
Seal script
Regular script
牍 (牘)
writing tablet; documents, books; documents
牍
documents
连篇累牍
verbose
长篇累牍
(of a text) very lengthy (idiom)
文牍
paperwork
文牍主义
red tape
Academia Sinica
Make Me a Hanzi
Unicode
Baxter-Sagart
Dong Chinese
CC-CEDICT
SUBTLEX-CH
MTSU Chinese text computing