noun
twin; paired twin-style item
Loanword-style noun or modifier meaning a twin or something arranged as a pair. For human twins in everyday Japanese, 双子 is usually more ordinary than ツイン.
このバンドはツインボーカルで有名だ。
This band is famous for having twin vocalists.
彼らは英語風にツインと呼ばれることもある。
They are sometimes called twins in the English-style way.
noun
twin room; room for two
Hotel abbreviation of ツインルーム. In Japanese hotel usage this commonly means a room for two people, often with two separate beds; it is distinct from ダブル when bed type matters.
See also: ツインルーム
今夜はツインを一部屋予約しました。
I reserved one twin room for tonight.
シングルではなくツインに泊まりたいです。
I'd like to stay in a twin room, not a single.