Wordnet 3.0
NOUN (1)
1. 
 flesh of a chicken (or game bird) split down the back and grilled (usually immediately after being killed); 
VERB (2)
1. 
 prepare for eating if or as if a spatchcock; 
- Example: "spatchcock a guinea hen"2. 
 interpolate or insert (words) into a sentence or story; 
The Collaborative International Dictionary of English v.0.48:
Spatchcock \Spatch"cock`\, n.
   See Spitchcock.
   [1913 Webster]
WordNet (r) 3.0 (2006):
spatchcock
    n 1: flesh of a chicken (or game bird) split down the back and
         grilled (usually immediately after being killed)
    v 1: prepare for eating if or as if a spatchcock; "spatchcock a
         guinea hen"
    2: interpolate or insert (words) into a sentence or story