Wordnet 3.0
ADVERB (3)
1. 
 with regard to technique; 
- Example: "technically lagging behind the Japanese"- Example: "a technically brilliant boxer"2. 
 with regard to technical skill and the technology available; 
- Example: "a technically brilliant solution"3. 
 according to the exact meaning; 
 according to the facts; 
- Example: "technically, a bank's reserves belong to the stockholders"- Example: "technically, the term is no longer used by experts"
The Collaborative International Dictionary of English v.0.48:
Technically \Tech"nic*al*ly\, adv.
   In a technical manner; according to the signification of
   terms as used in any art, business, or profession.
   [1913 Webster]
WordNet (r) 3.0 (2006):
technically
    adv 1: with regard to technique; "technically lagging behind the
           Japanese"; "a technically brilliant boxer"
    2: with regard to technical skill and the technology available;
       "a technically brilliant solution"
    3: according to the exact meaning; according to the facts;
       "technically, a bank's reserves belong to the stockholders";
       "technically, the term is no longer used by experts"