筆筒筒 [笔－－]

Jyutping bat1 tung2 tung4
Pinyin bǐ tǒng tǒng

Definitions (Wiktionary)
  1. noun, Sichuanese
    pen container; brush case
    (syn.) 筆袋, 笔筒, 文具盒, 筆盒, 笔盒, 鉛筆篋仔, 铅笔箧仔, 筆筒, 铅笔盒, 鉛筆盒, 笔袋