Pustulæ, Gell. Small pockes.Rupta pustula. Tibul. When the wheale is broken.Pustulæ liuentes. Pli. Wan wheales or blisters.Lucentes pustulæ. Mart.
Lewis and Short: Latin dictionary
pustŭla, ae, f. [pus; cf. pusula]. I. Upon the skin, a blister, pimple, pustule: eruptiones quaedam pustularum, et ulcuscula, Sen. Ep. 72, 6; Plin. 20, 22, 87, 238; 20, 13, 51, 141 (pusula in both cases, Jahn); Tib. 2, 3, 9 (passula, M.); Mart. 11, 98.—II. Upon other things, a bubble, blister, e. g. in boiling water, in lime, on earthen-ware, etc., Vitr. 7, 2; Plin. 20, 18, 86, 203 (pusula, Jahn); 37, 7, 26, 98 (pusulis, Jahn); Mart. 8, 51, 6.
pustŭlo, āvi, ātum, 1, v. a. and n. [pustula]. I.Act., to blister, to cause blisters or pustules; hence, mid., to blister, become blistered: ne usta pustulentur, Cael. Aur. Tard. 5, 1, 16.—II.Neutr., to blister, break out into blisters, Tert. Hab. Mul. 6.