Once is a 2007 Irish romantic musical drama film written and directed by John Carney. The film stars Glen Hansard and Markéta Irglová as two struggling musicians in Dublin, Ireland. ONCE definition: 1. one single time: 2. at the same time: 3. used when something happens that does not usually…. Learn more. ONCE meaning: 1. one single time: 2. at the same time: 3. used when something happens that does not usually…. Learn more. 该词在副词用法中既可表示单次动作的频率（如 I visit once a week ），也可描述过去发生的状态（如 I once knew her ）。 连词用法强调条件与结果的即时关联（如 Once you finish, go home ），名词用法多用于口语化表达（如 Just this once ）。 Once is a 2006 Irish musical film written and directed by John Carney. Set in Dublin, this naturalistic drama stars musicians Glen Hansard (of popular Irish. Once is a musical based on the 2007 film of the same name by John Carney. Like the film, music and lyrics were by Glen Hansard and Markéta Irglová, including the Academy Award-winning Falling Slowly. The book for the musical was written by Enda Walsh. infrequently: I've seen her in the elevator once or twice. Idioms once upon a time, at some unspecified past time, esp. a long time ago: Once upon a time, in a faraway land, there lived a prince and princess. Adverb edit once (not comparable) (frequency) One and only one time. synonym Synonym: one time I have only once eaten pizza. The meaning of ONCE is one time and no more. How to use once in a sentence. Once: Directed by John Carney. With Glen Hansard, Markéta Irglová, Hugh Walsh, Gerard Hendrick. A modern-day musical about a busker and an immigrant and their eventful week in Dublin, as they write, rehearse and record songs that tell their love story.