A North American shrub or small tree with bitter fruit that was formerly used in brewing as a substitute for hops.
Ptelea trifoliata, family Rutaceae
 Example sentencesExamples
-  I've had a few Giant Swallowtails laying eggs on my hop trees in the butterfly garden.
 -  Recently there has been some evidence that hop trees could have medicinal value and may even show promise in the treatment for cancer.
 -  Another shrub with three leaflets like the hop tree is the bladder nut.
 -  We passed hop trees and Indian plums on the first pathway before it twisted downward into a valley.
 -  The name hop tree originates from the use of the fruits as a substitute for hops in brewing.