rainbows
n. countable A1 Beginner US //ˈɹeɪnˌboʊz// UK //ɹˈeɪnbəʊz// rain·bows
The children ran outside to see the rainbows after the storm.
We saw two bright rainbows stretching across the valley as the sun broke through the afternoon rain.
While rainbows are often perceived as semi-circular arcs from the ground, they are actually full circles of light whose lower halves are obscured by the horizon.
Usage
Plural form of 'rainbow'; refers to multiple instances of the phenomenon.