tōu​dù

illegal crossing

偷渡 tōu​dù
illegal crossing verb
To enter or leave a country illegally or secretly, often by crossing a border clandestinely or as a stowaway on a ship.

He attempted to smuggle himself out of the country in a shipping container, but was discovered by customs.

run a blockade verb
To secretly pass through a military or naval blockade without authorization.

The speedboat tried to run the enemy's naval blockade in the middle of the night.

Frequency

Movie subtitles
2.30 per million appears in 1% of films
Written text
2.56 per million

Sources

Definitions
CC-CEDICT