Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. lactans, P. and P. a., of lacto, q. v.
2. Lactans, ntis, m. [lac], the god of milky growth in corn: Lactantem deum esse qui se infundit segetibus, et eas facit lactescere, Varr. ap. Sen. Verg. G. 1, 315.