What is "spring up"

vb. 1 (context intransitive English) To appear suddenly. 2 (context intransitive figuratively English) To come rapidly into existence.

v. come into existence; take on form or shape; "A new religious movement originated in that country"; "a love that sprang up from friendship"; "the idea for the book grew out of a short story"; "An interesting phenomenon uprose" [syn: originate, arise, rise, develop, uprise, grow]

Spring Up is the debut mini album by South Korean boy band Astro. The album was released digitally and physically on February 23, 2016 by Fantagio. The album contains five tracks with the lead single, "Hide & Seek" and second single "Cat's Eye".