Meaning of ashi in Japanese

人間は一本のアシに過ぎず、その本性はきわめて弱いが、人間は考える葦である。
Man is but a reed, the weakest in nature, but he is a thinking reed.

あそこから人影が見えた。
A form appeared from over there.

ちょっと屈めば、アソコがチラチラと見え隠れします。
If you just crouch a little, her crotch can just be seen flicking in and out of sight.

学生たるものはいかがわしい場所にちかづかない方がよい。
Students are expected to stay away from dubious places.

そう言えば、鯔背な男だった記憶が有るがどうしてるんだろな？
Now that you mention it, I remember he was a dashing man. I wonder how he's doing?

お化け屋敷に行くの。夜寝られなくなっちゃうよ。
The haunted house? I won't be able to sleep at night.