Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
mīcārĭus, a, um, adj. [mica], of or belonging to crumbs or little bits (post-Aug.): homo frugi, et micarius, a crumb-gatherer, i. e. frugal, economical, Petr. 73, 6.