(statistics) A binary variable that takes a value of 0 or 1 to indicate which category an individual falls into.

A railroad car containing its own steam power or locomotive.

plural of dummy car

plural of dummy board

plural of tailor's dummy

(slang) Synonym of idiot light (“warning light”)

plural of dummy light

(grammar) A pronoun used to fulfill a syntactic role rather than one with a specific referent. For example, the "it" in "It's raining".

plural of dummy pronoun

plural of dummy half