2 Old HSK word(s): ☊筒 ** C ☊手电筒 ** D
笔筒* * 传话筒* * 传声筒* * 出气筒* * 打气筒* * 电筒* * 浮筒* * 花筒* * 话筒* * 卷筒* * 炮筒* * 听筒* * 万花筒* * 信筒* * 袖筒* * 烟筒* * 邮筒* *

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邮 postal, mail / post office
筒 thick piece of bamboo / pipe

Hsk Characters: 筒 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
筒 7B52 + 筒 + + thick piece of bamboo / pipe 竹 同 Bamboo 同 (IDENTISCH) tong3 +

Korean:

筒 + 筒 대롱통
1 NHSK word(s): 话筒* 6 hua4 tong3microphone
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):