隧 (suì): tunnel

Meanings

火车穿过一条长长的隧道。

Huǒchē chuānguò yì tiáo chángcháng de suìdào.

The train passed through a long tunnel.

这条海底隧道修了五年。

Zhè tiáo hǎidǐ suìdào xiū le wǔ nián.

It took five years to build this undersea tunnel.

usage

隧 appears almost only in 隧道 (tunnel), whether for roads, railways, or subways.

radical

阝 fù

mound; hill (left-side form of 阜)

On the left this is the mound radical (left-side form of 阜), used for things to do with hills and earthworks, fitting a passage dug through ground.

phonetic

遂 suì

to fulfill; thereupon

On the right 遂 supplies the sound exactly, with no shift. It serves purely as the phonetic element.

隧 suì