a day on which work is suspended by law or custom; "no mail is delivered on federal holidays"; "it's a good thing that New Year's was a holiday because everyone had a hangover"
lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight"
lengthen or extend in duration or space; "We sustained the diplomatic negotiations as long as possible"; "prolong the treatment of the patient"; "keep up the good work"