noun
blowing through; ventilation; draft
Only with reading ふきとおし
Describes wind or air passing through a space, often creating a draft. Restricted to reading ふきとおし.
この部屋は吹き通しがいいので、夏は涼しい。
This room has good ventilation, so it's cool in summer.
窓を開けると、気持ちのいい吹き通しが感
When you open the window, you can feel a pleasant draft.
noun
blowing relentlessly
Refers to wind that blows continuously without stopping. Can be used with either reading.
冬の海岸では、吹き通しの風が身にしみる。
On the winter coast, the relentlessly blowing wind cuts to the bone.
noun
blowing hot air; exaggerating; boasting
Figurative use: talking big or making empty boasts. Often used in the phrase 吹き通しを言う. Can be used with either reading.
彼の話はいつも吹き通しばかりで、信用できない。
His stories are always just hot air; I can't trust him.
あの政治家の演説は吹き通しに過ぎない。
That politician's speech is nothing but boasting.
Compound of 吹き (fuki, continuative form of 吹く 'to blow') + 通し (tōshi, continuative form of 通す 'to let pass through'). The literal meaning 'blowing through' extends to continuous blowing and figuratively to 'blowing hot air' (boasting).