Word: 膝盖 (xīgài) Traditional: 膝蓋 膝盖 dictionary entry xīgài knee; to kneel down (in admiration) Full dictionary entry for 膝盖 Example sentences using 膝盖 2 sentences, showing page 1 of 1. 我在膝盖上跟婴儿玩。 Wǒ zài xīgài shàng gēn yīng'ér wán. I played with the baby on my knee. 我的膝盖疼。 Wǒ de xīgài téng. My knee aches.