Collect up Definition 1 of 3Pro Tip 1/3Physical Action Used when physically picking up multiple items scattered around. The children helped collect up the toys after playtime. Pro Tip 2/3Cleanup Effort Often implies cleaning or organizing a space. Volunteers will collect up the litter in the park this weekend. Pro Tip 3/3Completion Task Suggests finishing an activity by gathering items used during it. Let's collect up the paints and brushes before we leave.