An involuntary erection present upon waking.
Several members of the family Convolvulaceae; climbing plants with trumpet shaped flowers.
A rolling cloud in the shape of a cylinder.
Paruretic.
Having an erection when waking from sleep or, more generally or metaphorically, a false or "empty" erection.
(by extension) Falsely proud, implying an outward display of success or virility belies a dubious reality.