Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
circum-pōno, pŏsui, pŏsĭtum, 3, v. a., to set, put, or place around (perh. not before the Aug. per.): ferulas, Cels. 8, 10, 1: stramenta, Plin. 17, 28, 47, § 263: armatos, * Suet. Caes. 30: piper catillis, * Hor. S. 2, 4, 75: nemus stagno, Tac. A. 14, 15; id. H. 2, 59.