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1. To accomplish some task that one has been meaning to complete or take care of. A noun or pronoun can be used between "box" and "off." We'll need to do the paperwork sooner or later, so let's just box it off this weekend. There are a few things we still need to box off during this meeting.
2. nautical To force the head of the boat away from the wind by hauling the jib sheets toward the rear of the boat and the headsail to the windward side. The first mate ordered the crew to begin boxing off.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.