穴-9 空Ⅰ(形) empty; hollow; void; vacant Ⅱ(名) sky; air Ⅲ(副) for nothing in vain

空   Empty space is the phonetic word. Points for the pictogram; workers as sound character. "Said the text" Note: "awakened from the hole, industrial sound.." That is an empty hole, hole, and more writing this hole. Nothing said internal space. Refers no, no. Also refers to the space air. Sky heaven saying nothing. He said at the more distant space. Extended vacuum, vacuum, hollowed, hollow and so on.


空   空是形声字。穴为形符；工为声符。《说文》注：“窍也。从穴,工声。” 空即孔、穴，今多写作孔。内部无物称空。泛指无、没有。又指空间、空气。天上无物曰天空。更遥远处曰太空。引申真空、凭空、挖空、镂空等。

kōng

空Ⅰ(形) empty; hollow; void; vacant Ⅱ(名) sky; air Ⅲ(副) for nothing in vain

空   （同上）此处指空缺、空白。作动词，指腾出来，使空缺。

kòng

空Ⅰ(动) leave empty or blank Ⅱ(形) unoccupied; vacant Ⅲ(名) ① empty space ② free time; spare time; leisure; free hours