Obs. Also 6 bolaster, 7 bulaster. App. a phonetically reduced form of bullestre, bullace-tree (see BULLACE). Also bullester-tree.
1500. Ort. Voc., in Promp. Parv., 42. Pepulus, a bolaster.
1562. Turner, Herbal, II. 103 b. The one [kind of plum] is called the bulles tre or the bullestertre.
a. 1700. D. Campbell, Let., in C. Innes, Sk. Early Sc. Hist., 432, note. I send you the wrack of all my plumes damsones and bulasters.