Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) extension, filename extension, file name extension (a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename) "most applications provide extensions for the files they create"; "most BASIC files use the filename extension .BAS"