It can be a small or large opening that reaches up to the nose.

VOA: special.2009.12.22

Some people said of him in real life he had a little button nose. I don't know from some pictures of the look, if they were without make-up.

有人说在现实生活中，他的鼻子,有一点塌，我不知道是否有,没画过妆的照片上有他原本的样子。

麻省理工公开课 - 电影哲学课程节选

Some people said of him in real life he had a little button nose. I don't know from some pictures of the look, if they were without make-up.

有人说在现实生活中，他的鼻子,有一点塌，我不知道是否有,没画过妆的照片上有他原本的样子。

麻省理工公开课 - 电影哲学课程节选