What is the meaning of the word "babies'-breath"?

Definitions:

  1. A delicate and airy flowering plant that is commonly used in flower arrangements, known for its tiny white or pink flowers that grow in clusters on wiry stems. copy to clipboard NOUN
    • The bride's bouquet was filled with delicate babies'-breath flowers. copy to clipboard
    • The floral arrangement on the table included a sprinkle of babies'-breath for a touch of elegance. copy to clipboard

Synonyms: