What does ワイシャツ mean?
ワイシャツ is a Japanese noun meaning “dress shirt, business shirt” in English. It is written as ワイシャツ in katakana, and waishatsu in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
このワイシャツは首まわりが合わない。
This shirt doesn't fit me round the neck.