From WordNet (r) 3.0 (2006):
blank
adj 1: (of a surface) not written or printed on; "blank pages";
"fill in the blank spaces"; "a clean page"; "wide white
margins" [syn: blank, clean, white]
2: void of expression; "a blank stare" [syn: blank, vacuous]
3: not charged with a bullet; "a blank cartridge"
n 1: a blank character used to separate successive words in
writing or printing; "he said the space is the most
important character in the alphabet" [syn: space,
blank]
2: a blank gap or missing part [syn: lacuna, blank]
3: a piece of material ready to be made into something
4: a cartridge containing an explosive charge but no bullet
[syn: blank, dummy, blank shell]
v 1: keep the opposing (baseball) team from winning