n [U] (esp unhealthy) paleness of the face （尤指不健康所致的）脸色苍白
*Her cheeks have a sickly pallor. 她面色苍白带有病容.
n [singular, U]
[Date: 1300-1400; Language: Latin;Origin: pallere 'to be pale']
when someone's skin is very pale in a way that makes them look weak or unhealthy
A sleepless night had added to her pallor.