Meanings
Usage patterns
ダブルの〈物〉a double(-sized) ~ / a ~ that is doubled
I ordered a double shot of coffee.
ダブルルームを予約するto book a double room
I booked a double room at the hotel.
ダブルのスーツを着るto wear a double-breasted suit
He always wears double-breasted suits.
ダブルスで対戦するto play a doubles match
They played a doubles match.