既是 jìshì both... and Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: both... and All meanings 2 jìshì 2 both... and 1since 1 1 sentence for 既是 (jìshì — both... and) 他既是我的老师,又是我的朋友。 tā jìshì wǒ de lǎoshī, yòu shì wǒ de péngyou. He is both my teacher and my friend. Source: Dong Chinese Dictionary