ADJECTIVE (2)

1. excellent and delightful in all respects;
- Example: "an idyllic spot for a picnic"

2. suggestive of an idyll; charmingly simple and serene;
- Example: "his idyllic life in Tahiti"

The Collaborative International Dictionary of English v.0.48:

Idyllic \I*dyl"lic\, a.
   Of or belonging to idyls.
   [1913 Webster]

WordNet (r) 3.0 (2006):

idyllic
    adj 1: excellent and delightful in all respects; "an idyllic
           spot for a picnic"
    2: suggestive of an idyll; charmingly simple and serene; "his
       idyllic life in Tahiti"