bareback

/bair-bak/US // ˈbɛərˌbæk //UK // (ˈbɛəˌbæk) //

赤膊上阵,裸背,裸背式,裸体

Definitions

1
- : with the back of a horse, burro, etc., bare; without a saddle: to ride bareback; a bareback rider.

The group also posted to Craigslist: with the headline, "Do you like to bareback?"
That is why Indian children prefer riding bareback on an elephant to taking a howdah.
Without a word John leaped bareback on one of the horses he had just unsaddled and spurred him across the courtyard.
Burt rode bareback into camp, driving half the number of the horses; Riggs followed shortly with several more.
Johnnie mounted Ebenezer bareback; and leading Twinkleheels, he turned down the lane.
Especially after the circus men came along and pasted posters on the barn Johnnie Green liked to ride bareback.