Godan verb with 'su' ending, Transitive verb
to carry over (an issue, decision, work, etc.); to carry forward; to put off; to postpone; to defer
仕事は金曜日の１１時に終わらなかったので、次の月曜日に持ち越すことにした。The work wasn't finished at 11:00 p.m. Friday, so they decided to carry it over to the following Monday.
Also written 持越す【もちこす】