What is the meaning of Buttonhole?

A hole through which a button is pushed to secure a garment or some part of one.

A flower worn in a buttonhole for decoration.

So shaped that it can be worn on a buttonhole or it is similar to a buttonhole.

A small slot-like cut or incision, made for example by an accident with the scalpel.

The mouth and/or nose and/or eyes if appearing tiny.

vagina, coin slot.

The butthole (anus).

To detain (a person) in conversation against their will.

To cut one or more buttonholes (in).

To sew by buttonhole stitch.

To make a small slot-like incision in (intentionally or unintentionally).

To apply a flowery formation in.

To attain buttonhole-like formations on cutting.

Source: wiktionary.org