1. saved by the bell - Verb
2. saved by the bell - Phrase
(boxing, wrestling, of a competitor) In a boxing or wrestling match or similar competition, spared from being counted out by the referee by the ringing of the bell which concludes the round.
(idiomatic, by extension) Rescued or favorably assisted by a timely interruption or by the sudden termination of difficult circumstances.
Source: en.wiktionary.orgShe is known for starring as Kelly Kapowski on NBC 's Saved by the Bell (1989–93) and as Valerie Malone on Fox 's Beverly Hills, 90210 (1994–98), two TV series that met with great success. Source: Internet
She then continued with starring in spin-off Saved by the Bell: The College Years in its single season (1993–94) and in television movie Saved by the Bell: Wedding in Las Vegas (1994), which marked the end of the original Saved by the Bell series. Source: Internet