半边屁股 meaning in Chinese

buttock

Bloom looked at the head of a horse not worth anything like sixtyfive guineas , suddenly in evidence in the dark quite near , so that it seemed new , a different grouping of bones and even flesh , because palpably it was a fourwalker , a hipshaker , a blackbuttocker , a taildangler , a headhanger , putting his hind foot foremost the while the lord of his creation sat on the perch , busy with his thoughts
由于是在黑暗中突然出现在挨得很近的地方，它就好像是个由骨骼甚至肉组成的与马迎然不同的新奇的东西了。这显然是一匹后腿朝前迈，一路倒退着的四肢不协调的马，半边屁股略低，臀部是黑的293 ，甩着尾巴，耷拉着头。这当儿，牲口的主人正坐在驭者座上，忙于想心事。