1. a part or piece left hanging, unattached, or unused: Remind me to tack down that loose end on the stairway carpet.
2. an unsettled detail, as of a business matter: The arrangements have been made, except for a few loose ends.
3. at loose ends , in an uncertain or unsettled situation or position: Ever since leaving the company, he's been at loose ends.
Also, at a loose end .
[ 1540-50 ]