辻相撲
Meanings
1
street-corner sumo; impromptu amateur wrestling
Historical term for informal sumo matches held outdoors, especially in autumn, often by amateurs on a street corner or in an empty field.
In the Edo period, street-corner sumo was held in various places when autumn came.
2
roadside tent sumo show
Refers to a commercial sumo exhibition staged in a tent by the roadside, distinct from the informal amateur matches of sense 1.
A traveling troupe put on a roadside tent sumo show.