This article, the author presents the lexical family with piecz-/piek- roots. A pool of 39 lexemes was extracted from all the available lexicographic sources of historical vocabulary and presented in the form of a word-forming cluster. The goal of the analysis was to display the internal structure of the chronological derivation of the core of the cluster, piec się with the group of terms of varying degrees of derivation. The analysis is an attempt at explaining the meaning behind the formations with piecz-/piek-roots. The reconstruction of the cluster leads to a discussion of the observed transformations, as well as identifying the nature of the changes to the meaning of specific units. To a large extent, the semantic modifications...