Collins Chinese Dictionary Plus (3rd edition), 2011:
板
bǎnI 名
1
(=片状硬物) board
- 天花板(闆) tiānhuābǎn ceiling
2 (音) beat有板(闆)有眼
yǒu bǎn yǒu yǎn rhythmical
II 形
1 (指人) stiff
- 古板(闆) gǔbǎn inflexible
2 (指物) hard
- 地太板了。 Dì tài bǎn le. The ground is very hard.
II 动
put on a stern expression;
(pt, pp put)
(pt, pp put)
- 我们(們)经(經)理老板(闆)着(著)脸(臉)。 Wǒmen jīnglǐ lǎo bǎnzhe liǎn. Our manager always looks stern.