Old maid

If she is looking for the perfect man before she marries, she'll be an old maid.

Source: wiktionary

The people produce far more food than they consume, and exchange the surplus for gongs and brass cannon, ancient jars, and gold and silver ornaments, which constitute their wealth. On the whole, they appear very free from disease, marriages take place early (but not too early), and old bachelors and old maids are alike unknown. Why, then, we must inquire, has not a greater population been produced?

Source: wiktionary

The following are the only hardy species grown, but V. rosea, with rosy or white flowers, is a pretty greenhouse plant known as ' Old Maid ' or ' Madagascar Periwinkle'.

Source: wiktionary

Vincas — Old Maids or Periwinkles, often serve a useful purpose as edgings or ground work to beds or borders.

Source: wiktionary