hang by a thread

:  to fasten to some elevated point without support from below :  suspend

:  to fasten so as to allow free motion within given limits upon a point of suspension

:  to adjust the hem of (a skirt) so as to hang evenly and at a proper height

:  the manner in which a thing is poised when suspended from above without support from below :  the way in which a thing hangs (see ¹hang)

:  declivity, slope

:  droop

:  a filament, a group of filaments twisted together, or a filamentous length formed by spinning and twisting short textile fibers into a continuous strand

:  a piece of thread

:  any of various natural filaments

:  to pass a thread through the eye of (a needle)

:  to arrange a thread, yarn, or lead-in piece in working position for use in (a machine)

:  to pass something through in the manner of a thread