smile n.2
1. the gap of bare flesh between a stocking and a suspender belt.
![[UK]](/static/img/flags/uk.png "United Kingdom") | DSUE (8th edn) 1096/2: [...] c. 1910–50. |
2. bare flesh appearing between the top of a skirt or pair of trousers and the shirt, blouse etc.
| DSUE (8th edn) 1096/2: [...] since ca. 1950. |