The article analyzes Ancient Greek words λειμών and λιμήν that are usually viewed by modern linguists as a word group that is isolated in Ancient Greek and does not correspond to any formations in other IndoEuropean languages. It is shown that the word family λειμών, λιμήν and their derivatives find a number of close parallels in Baltic and Slavic languages that are comparable not only form the point of view of morphology, but also from the point of view of semantics and word usage. Thus, it is possible to λειμών and λιμήν with Russ. лить, Lith. líeti, Latv. líeti and their derivatives.