Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

cŏlumnātus, a, um, adj. [columna], supported by posts or pillars (perh. only in the foll. exs.): tholus, Varr. R. R. 3, 5, 12: diversoria, Ambros. de Cain et Abel, 1, 5, 19: pons, Ampel. Lib. Mem. 8, 3.
Humorously: os, i. e. supported upon the hand, Plaut. Mil. 2, 2, 57; cf. id. ib. 2, 2, 54.