Naval fortification

• U-boat home
• The lowest molding of an architectural base or of a baseboard
• The Navy has one in Groton, Connecticut

Wikipedia Word definitions in Wikipedia
In topology , a subbase (or subbasis ) for a topological space with topology is a subcollection of that generates , in the sense that is the smallest topology containing . A slightly different definition is used by some authors, and there are other useful ...

Wiktionary Word definitions in Wiktionary
n. 1 (context architecture English) The lowest projecting part of a baseboard, a pedestal or a similar construct. 2 (context mathematics English) A certain subcollection of a topological space

WordNet Word definitions in WordNet
n. the lowest molding of an architectural base or of a baseboard