The Collaborative International Dictionary of English v.0.48:

Princely \Prince"ly\, a.
   1. Of or relating to a prince; regal; royal; of highest rank
      or authority; as, princely birth, character, fortune, etc.
      [1913 Webster]

   2. Suitable for, or becoming to, a prince; grand; august;
      munificent; magnificent; as, princely virtues; a princely
      fortune. "Most princely gifts." --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Princely \Prince"ly\, adv.
   In a princely manner.
   [1913 Webster]

         My appetite was not princely got.        --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

princely
    adj 1: rich and superior in quality; "a princely sum"; "gilded
           dining rooms" [syn: deluxe, gilded, grand,
           luxurious, opulent, princely, sumptuous]
    2: having the rank of or befitting a prince; "a princely
       bearing"; "princely manner"