Crosswords Solver

Answer: subbase
Answer	Crossword Clue
SUBBASE	U-boat home
subbase	collection of subsets of a topological space having the property that every open set of a given topology can be written as the union of intersections of finite numbers of sets in the collection
subbase	the lowest part of a base, as of a column, that consists of two or more horizontal members

subbase	the lowest part of a base

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Answer: subbase