Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
caesor, ōris, m. [caedo], one who hews something (post-class.): lignorum caesores, hewers of wood, Hier. Ep. 53, n. 6, after the Vulg. Deut. 29, 11: lapidum, stone-breaker, Ambros. Luc. 2, 89 fin.; Vulg. 2 Par. 24, 12; cf. Val. Prob. II. p. 1458 P