Wordnet 3.0
ADVERB (4)
1. 
 in a secure manner; 
 in a manner free from danger; 
- Example: "she held the child securely"[syn: securely, firmly]
2.  in a confident and unselfconscious manner; 
- Example: "he acts very securely in front of the camera"
3.  in a manner free from fear or risk; 
- Example: "the outcome of expansion in the sixties and seventies will be an academic hierarchy securely supported by scholastic selection"
4.  in an invulnerable manner; 
- Example: "the agreed line was to involve at several points the withdrawal of French troops from positions which they had quite securely held"
The Collaborative International Dictionary of English v.0.48:
Securely \Se*cure"ly\, adv.
   In a secure manner; without fear or apprehension; without
   danger; safely.
   [1913 Webster]
         His daring foe . . . securely him defied. --Milton.
   [1913 Webster]
WordNet (r) 3.0 (2006):
securely
    adv 1: in a secure manner; in a manner free from danger; "she
           held the child securely" [syn: securely, firmly]
    2: in a confident and unselfconscious manner; "he acts very
       securely in front of the camera" [ant: insecurely]
    3: in a manner free from fear or risk; "the outcome of expansion
       in the sixties and seventies will be an academic hierarchy
       securely supported by scholastic selection" [ant:
       insecurely]
    4: in an invulnerable manner; "the agreed line was to involve at
       several points the withdrawal of French troops from positions
       which they had quite securely held"