1. (

• nightlong ,
• all-night ,
• overnight

) lasting, open, or operating through the whole night; "a nightlong vigil"; "an all-night drugstore"; "an overnight trip" ;

1. (

• overnight

) during or for the length of one night; "the fish marinates overnight" ;

2. (

• overnight ,

) happening in a short time or with great speed; "these solutions cannot be found overnight!" ;