Wordnet 3.0
ADJECTIVE (1)
1. 
 of or relating to or being a feria; 
The Collaborative International Dictionary of English v.0.48:
Ferial \Fe"ri*al\, n.
   Same as Feria.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Ferial \Fe"ri*al\, a. [LL. ferialis, fr. L. ferie holidays: cf.
   F. f['e]rial. See 5th Fair.]
   1. Of or pertaining to holidays. [Obs.] --J. Gregory.
      [1913 Webster]
   2. Belonging to any week day, esp. to a day that is neither a
      festival nor a fast.
      [1913 Webster]
WordNet (r) 3.0 (2006):
ferial
    adj 1: of or relating to or being a feria