double U

See also: double-u

English

Noun

double U (plural double Us)

1. Alternative form of double-u
2. something in the shape of two U's (not of a W)
   • 1942, Playing Tricks with Plants, Popular Science, Vol. 140, No. 3 (March), p. 110:

     In training a tree in the double U […] only the two topmost buds are allowed to grow on the trunk and two arms.

See also

• triple U (something in the shape of three nested U's)