Entry 2 senses · 2 variants Webster, 1913 Lactary · Lac·ta·ry · IPA /ˈlæktəɹi/ a. n. 01 a. Milky; full of white juice like milk. 1. Milky; full of white juice like milk.[Obs.] 02 n. a dairyhouse. 1. a dairyhouse.[R.]