The definition of asinine is to be silly, stupid or ridiculous. An example of asinine is a foolish prank played on a friend.
In humans, there are twelve thoracic vertebrae and they are intermediate in size between the cervical and lumbar vertebrae; they increase in size going towards the lumbar vertebrae, with the lower ones being a lot larger than the upper.
In the adult the five sacral and four coccygeal vertebrae fuse to form the sacrum and the coccyx. The average length of the vertebral column in men is about 71 cm. The cervical part measures about 12.5 cm, the thoracic part about 28 cm, the lumbar part about 18 cm, and the sacrum and the coccyx about 12.5 cm. The vertebral column in women measures approximately 61 cm.