The Chinese word for blackboard is
黑板

hēi bǎn

Chinese Definition

blackboard
1. 黑板
Components
黑
1. black
黑色 - black color
她戴著zhe 黑帽子zi。 - She's wearing a black hat.
2. dark; darkness
這麼黑，我看不見。 - It's so dark; I can't see.
她很怕黑。 - She is very afraid of the dark.
成seng4 間房fong4-2 好黑。 - The whole room is very dark.
3. evening; night
4. illegal; clandestine; secret; shady
黑市 - black market
黑幫 - criminal gang
昨天他們在公園開了個黑會。 - They had a clandestine meeting in the park yesterday.
5. (colloquial) to illegally reside (in a country)
6. sinister; evil
7. to make fun of; to mock
8. (computing) to hack
黑客 - hacker
你可以黑-掉 ^亨德森辦公室的電腦嗎？ - Can you hack into Henderson's office computer?
9. (colloquial) to libel
這件事，我可是有.一.說.一，不吹不黑。 - As for this thing, I say it as it is and don't boast or libel.
這是 × × 被黑得de 最慘的一.次。 - This is the time when *** is libelled the most badly.*
10. one who libels
11. (by extension) hater; anti-fan
12. (Cantonese) unlucky; unfortunate
13. (Hui, euphemistic) pig; pork
14. Short for 黑龍江, Heilongjiang province
15. (Hokkien, Teochew, Hainanese) Alternative form of 烏 (-, t=black)
板
1. plank; board
木板 - board; plank
玻璃板 - glass board
2. blackboard
板報
3. sluggish; stiff; inflexible
呆板 - sluggish
古板 - stuffy; old-fashioned and inflexible
4. to harden; hardened
5. (internet) board (sub-unit of a larger BBS or imageboard)
6. (music) clapper
7. (music) beat; meter; rhythm (in music or Chinese opera)
行板 - andante
散sǎn板 - sanban
8. to look serious or displeased
9. (literary or Min Nan) wooden coffin
10. (Min Nan) ability; capability; talent
11. (Suzhou) to have to; must
噶聲閒話板是俚說噶。 - That voice must be his., W-SZ, ref=1993, 蘇州方言詞典, page 19
12. Variant of 闆

Translations for 板 and their definitions

黑板
1. n. blackboard (from late 19th c.)
把黑板擦乾gān淨 - to wipe the blackboard clean -
他給了我一支粉筆，讓我在黑板上寫下自己的名字。 - He gave me a piece of chalk and asked me to write my name on the blackboard.
2. n. (literary, literally) black plank