孔

common

コウ/KŌ/    あな/ana/KOU/コウ/    ana/あな/

cavity;  hole;  slit;  very;  great;  exceedingly

Radical: 子 (child).   Strokes: 4画.   Elements: 乙子.   Variants: 甚.   Pinyin: kǒng.   Hangul: 공 [gong].   Nanori: のりnori.

Jōyō Kanji High School.   JLPT N1.

Example compounds:
コウKŌ瞳孔【どうこうdōkō】pupil; pupillary
孔子【こうしkōshi】Confucius
気孔【きこうkikō】pore; stoma; stigma; vesicle
あなana毛孔【けあなkeana】pores (of the skin)
孔【あなana】hole; deficit; vacancy; flaw; profitable place (or item, etc.) not well known by others; upset victory (with a large payoff); pit (of a theater); hiding place; underbelly (of society, etc.)
針の孔【はりのあなharinoana】eye of a needle
Codepoints and classification codes:
5b54–Unicode
25-6–JIS X 0208
1-3-1–SKIP
2c1.1–TKD
1241.0–Four Corner
3556–De Roo
Dictionary indices:
1265–Classic Nelson
1282–The New Nelson Character Dictionary by A. Nelson
179–New Japanese-English Character Dictionary by J. Halpern
131–Kanji Learner's Dictionary by J. Halpern
96–Remembering the Kanji by J. Heisig
1755–A New Dictionary of Kanji Usage (Gakken)
58–Japanese Names by P.G. O'Neill
1336–Essential Kanji by P.G. O'Neill
6933–Daikanwajiten 「大漢和辞典」 by T. Morohashi vol. 3 p. 801
1241–A Guide to Remembering Japanese Characters by K.G. Henshall
940–Kanji & Kana by Spahn and Hadamitzky
1203–Kanji Flashcards by M. Hodges and T. Okazaki
1028–Tuttle Kanji Cards by A. Kask
1881–Kanji in Context by Nishiguchi and Kono
456–Kodansha Compact Kanji Guide
97–Y. Maniette's French adaptation of Heisig
孔