screw thread
noun
1.
Also called
worm
. the helical ridge of a screw.
2.
a full turn of the helical ridge of a screw.
Origin
1805-15
Examples from the web for
screw thread
Specifically defined
screw thread
used on fire hose couplings.
The specific dimensions of
screw thread
employed to coupled fire hose and equipment.
British Dictionary definitions for
screw thread
screw thread
noun
1.
the helical ridge on a screw formed by a die or lathe tool