Common Meanings
1
dǎng挡
to block; to obstruct; to shield; to ward off
他用手遮挡住了阳光。
He used his hand to block the sunlight.
Refers to gears in a vehicle, such as 'engaging a gear' (挂挡) or 'changing gears' (换挡).
他熟练地换挡，加速驶离
He skillfully changed gears and accelerated away.
A gear, level, or setting on an instrument or device, indicating a specific range or degree of light, electricity, heat, etc.
这台风扇有三挡，你可以根据需要调节。
This fan has three settings, and you can adjust it according to your needs.
2
dàng挡
Used in the fixed phrase '摒挡' (bìngdàng), meaning to prepare, to arrange, or to get ready.
她仔细地摒挡着一切，以确保婚礼顺利进行。
She carefully prepared everything to ensure the wedding proceeded smoothly.