eye of a needle
hole
hole; opening; orifice; perforation
糸を針孔に通すのが難しい。
It's hard to thread a needle.
老眼で針孔が見えにくくなった。
My farsightedness makes it hard to see the eye of the needle.
この針は針孔が大きくて使いやすい。
This needle has a large eye and is easy to use.