pinstripe

noun
1
one of the thin white vertical lines printed on dark cloth that is used especially for making business suits
راه‌راه باریک, خط عمودی نازک, خط راه‌راه نازک
2
dark cloth with white vertical lines printed on it; a suit made from this cloth
پارچه خطوط باریک, پارچه راه‌راه باریک, کت‌وشلوار راه‌راه
a tall man in grey pinstripe
Without a pinstripe, you’d be underdressed.
a pinstripe suit