Srimad Bhagavatam Canto 08, Chapter 15, Text 17

SB 8.15.17

yatra nitya-vayo-rupah
 syama viraja-vasasah
bhrajante rupavan-naryo
 hy arcirbhir iva vahnayah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Everlastingly beautiful and youthful women, who were dressed with clean garments, glittered in the city like fires with flames. They all possessed the quality of syama.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Srila Visvanatha Cakravarti Thakura gives a hint of the quality of the syama woman.
 
sita-kale bhaved usna
 usma-kale susitalah
stanau sukathinau yasam
 tah syamah parikirtitah
 
A woman whose body is very warm during the winter and cool during the summer and who generally has very firm breasts is called syama.
Srimad Bhagavatam Canto 08, Chapter 15, Text 16
Srimad Bhagavatam Canto 08, Chapter 15, Text 18