How to write 驷

驷 sì 名词 【本义】: 同驾一辆车的四匹马。或驾四马之车。 (Original meaning: a team of four horses driving the same cart; or a cart drawn by four horses.) 【造字法】: 形声。从马，四声。 (Character creation method: pictophonetic; composed of the component for “horse” and the sound for “four”.) 【意思】 1. 同本义 ([En.] team of four horses) (1. Same as the original meaning: a team of four horses.) 马 ([En.] horse) (Horse) 例: 一言既出，～马难追 (Once something is said, it can't be taken back; you must be responsible for your words.) 2. 古星名 ([En.] stars) (Ancient star name, also known as “天驷” or “天龙”.) 例: 驷房 (the房 star) 3. 古同“四” ([En.] four) (Also used to denote “four” in ancient times.) 例: 三年之丧，二十五月而毕。若驷之过隙，然而遂之，则是无穷也 (In mourning for three years, it concludes after twenty-five months; if it continues like the驷 through a gap, then it is endless.)