spring /sprɪŋ/ verb (past tense and past participle sprang, also US sprung, past participle sprung)
spring back/forward/out, etc › to jump or move somewhere suddenly: The cat sprang onto the sofa. I tried to shut the door, but it kept springing open.
spring to life › to suddenly become very active: After about 8 o'clock, the city springs to life.
spring to mind › If a word or idea springs to mind, you suddenly think of it: He asked if I knew any good places to go, but nothing sprang to mind.