膝 (w)

(xī) knee

膝上型 (w)

(xīshàngxíng) laptop (computer)

膝上型电脑 (w)

(xīshàngxíngdiànnǎo) laptop (computer)

膝下 (w)

(xīxià) at the knee (in reference to children); (salutation used in letters to parents or grandparents)

膝盖 (w)

(xīgài) knee

膝袒 (w)

(xītǎn) to walk on one's knees and bare one's breast (a gesture of deepest apology)