|1.||[ adjective ] consisting of or involving two parts or components usually in pairs|
"an egg with a double yolk" "a double (binary) star" "double doors" "dual controls for pilot and copilot" "duple (or double) time consists of a multiple of two beats to a measure"
|2.||[ adjective ] having more than one decidedly dissimilar aspects or qualities|
|Synonyms:||double twofold threefold treble|
"a double (or dual) role for an actor" "the office of a clergyman is twofold public preaching and private influence"- R.W.Emerson
|3.||[ adjective ] (grammar) a grammatical number category referring to two items or units (as opposed to one item (singular) or more than one item (plural))|
"ancient Greek had the dual form but it has merged with the plural form in modern Greek"