buttonhole

Short definition from Wiktionary

Noun

1. 1
   A hole through which a button is pushed to secure a garment or some part of one.
2. 2
   A flower worn in a buttonhole for decoration.
3. 3
   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.
4. 4
   A small slot-like cut or incision, made for example by an accident with the scalpel.
5. 5
   The mouth, nose or eyes of a tiny appearance.
6. 6
   vagina, coin slot.
7. 7
   The butthole (anus).

Verb

1. 1
   To detain (a person) in conversation against their will.
2. 2
   To cut one or more buttonholes (in).
3. 3
   To sew by buttonhole stitch.
4. 4
   To make a small slot-like incision in (intentionally or unintentionally).
5. 5
   To apply a flowery formation in.
6. 6
   To attain buttonhole-like formations on cutting.