یک‌رنگ

From یک (yek-, “uni-”) +‎ رنگ (rang, “color”).

یک‌رنگ • (yek-rang)

1. unicolored
   • 11th century, Abu'l-Fadl Bayhaqi, Tarikh-i Bayhaqi

     و از ثقاتِ او شنیدم، چو بوابراهیم قاینی کدخدایش و دیگران، که بیست و سی قبا بود او را یک‌رنگ که یک سال می‌پوشیدی و مردمان جنان دانستندی که یک قباست

     and I [have] heard from his confidants, like Bu Ibrahim Qa'ini –his kadkhuda– and others, that he owned twenty-three unicolored robes that he used to wear for one year, and the "people of jinn" thought it was a single robe.

     (classical transliteration)