tank tread; continuous track; caterpillar track
Technical term for the endless metal or rubber belt used on tanks, bulldozers, and other tracked vehicles.
The tank's tread came off.
The bulldozer moved through the mud on its tracks.
Compound of 履 (crawling, treading) and 帯 (belt). The exact historical derivation is uncertain, but the kanji combination directly describes a tread belt.