壁 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
かべ kabe
KUNYOMI 訓読み
ヘキ heki
Examples
その男はビンを壁に叩きつけた。The man dashed the bottle against the wall.壁が地震で崩れた。The wall gave way in the earthquake.彼は壁にもたれた。He leaned against the wall.壁を塗るつもりです。We’re going to paint the wall.父は壁を白く塗った。Dad painted the walls white.私は壁に絵を掛けた。I hung a picture on the wall.壁にペンキが塗られた。The wall was coated with paint.彼女は壁を白く塗った。She painted the walls white.彼女は壁を絵で飾った。She decorated the wall with pictures.彼は壁の穴をふさいだ。He filled up the hole in the wall.