Sentence:  <WSD>Inverse limits</WSD> are concrete-categorical versions of limits. 
Meaning of the word marked with <WSD> tags:  A subset of the Cartesian product of all the members of an inverse system, such that a member "M" of the subset is a sort of “cross section” of the inverse system (as fiber bundle) induced by the morphisms of it. (If i \le j in the indexing poset then f_{ij}:A_j \rightarrow A_i in the inverse system and if a_i \in A_i, a_j \in A_j are components of "M" then f_{ij}(a_j) = a_i).