systems The set of all possible identifiers for some kind of object. From the definition of a set, all names in a namespace are unique and there is some rule to determine whether a potential name is an element of the set. For example, the Domain Name System includes rules for determining what constitutes a valid host name. (2008-12-09)
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a scrap or morsel of food left at a meal.
a gadget; dingus; thingumbob.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.