coccyx

UK:  ['kɒksɪks]

US:  ['kɑksɪks]

复数：coccyxes  

n.

1.尾臀骨

2.【解剖学】尾骨

1 . These patients should be few sitting on the pillow or other support the thing on, lest increase the pressure, aggravate symptoms coccyx.
此类患者应少坐于枕上或其他支持物上，以免增加尾骨部压力，加重症状。

2 . There is only one reason for a dog to sway its tail back and forth, its coccyx can be moved back and forth. But in fact, this is impossible.
狗想前后摇摆它的尾巴只能有一个理由，它的尾骨可以前后的运动，但实际上，并不可能的。

3 . Firm your scapulas against your back torso, lengthen your coccyx toward the floor, and arch your upper torso back slightly.
把肩胛稳固于躯干后侧，向地板方向拉长尾骨，并把躯干上部往后轻轻地拱起。

4 . So take a moment to pause and sit on your coccyx, the bone that was once a tail.
所以停下来，坐在那个曾经是我们的尾巴的尾骨之上思考一下。

5 . One striking example of an atavism is the human coccyx, or tailbone, which is a relic of the mammalian tail.
关于返祖的一个有力例证就是人类的尾骨，它是哺乳动物尾巴的遗留物。