ze4
to tilt; narrow; uneasy; oblique tones (in Chinese poetry)

strokes 4
radical
strokes after radical 2
逼仄 逼仄 bi1 ze4
narrow; cramped

平仄 平仄 ping2 ze4
level and oblique tones (technical term for classical Chinese rhythmic poetry)

仄径 仄徑 ze4 jing4
narrow path

仄声 仄聲 ze4 sheng1
oblique tone; nonlevel tone; uneven tone (the third tone of classical Chinese)