坠 (zhuì) is a verb meaning "to fall" or "to drop." It carries a literary tone and implies a heavy or uncontrolled downward motion. It commonly appears in set phrases such as 摇摇欲坠 (tottering on the verge of collapse).
一颗流星从天空坠落,划出了一道光。
Yī kē liúxīng cóng tiānkōng zhuìluò, huà chū le yī dào guāng.
A meteor fell from the sky, streaking a trail of light.
那架飞机在暴风雨中坠入了大海。
nà jià fēijī zài bàofēngyǔ zhōng zhuì rù le dàhǎi.
That airplane crashed into the sea during a storm.
花瓶从桌子上坠下来,摔成了碎片。
huāpíng cóng zhuōzi shàng zhuì xiàlái, shuāi chéng le suìpiàn.
The vase fell off the table and shattered into pieces.