common

ケツ/KETSU/    あな/ana/KETSU/ケツ/    ana/あな/

hole;  aperture;  slit;  cave;  den

Radical: (cave).   Strokes: 5画.   Elements: ハ宀.   Pinyin: xuè / xué.   Hangul:  [hyeol].   Nanori: けな / しし / kena / shishi / na.

Jōyō Kanji 6th Grade.   JLPT N1.

Example compounds:
ケツKETSUどうけつdōketsu】cave; den; grotto
ぼけつboketsu】grave, specifically the hole in the ground
けつketsu】ass; rear; acupuncture point
あなanaあなばanaba】little-known good place; good out-of-the-way place; well-kept-secret place; hole-in-the-wall
けあなkeana】pores (of the skin)
あなぐまanaguma】badger; Eurasian badger (Meles meles); defensive opening for shogi
Codepoints and classification codes:
7a74Unicode
23-74JIS X 0208
2-3-2SKIP
3m2.2TKD
3080.2Four Corner
762De Roo
Dictionary indices:
3313Classic Nelson
4187The New Nelson Character Dictionary by A. Nelson
2159New Japanese-English Character Dictionary by J. Halpern
1366Kanji Learner's Dictionary by J. Halpern
1316Remembering the Kanji by J. Heisig
1201A New Dictionary of Kanji Usage (Gakken)
158Japanese Names by P.G. O'Neill
984Essential Kanji by P.G. O'Neill
25406Daikanwajiten 「大漢和辞典」 by T. Morohashi vol. 8 p. 639
849A Guide to Remembering Japanese Characters by K.G. Henshall
899Kanji & Kana by Spahn and Hadamitzky
1595Kanji Flashcards by M. Hodges and T. Okazaki
860Guide to Reading & Writing Japanese: Third Edition 3rd edition by Henshall
834Tuttle Kanji Cards by A. Kask
1122Kanji in Context by Nishiguchi and Kono
1450Kodansha Compact Kanji Guide
1326Y. Maniette's French adaptation of Heisig