suu-suu
A thin, persistent stream of cold air coming through gaps or cracks. Makes you feel uncomfortably chilly.
💡In an old house with poor insulation — 'Cold air is coming in suu-suu from the window.'
隙間風がすうすう入ってきて寒い。
A draft is coming in suu-suu and it's cold.
Cold air was ___ through the gap under the door.
ドアの隙間から冷たい風が○○入ってくる。