<synset id="n02467884" type="n">
<lex_filenum>05<lex_filenum/>
<word lex_id="2">air sac<word/>
<pointer refs="n05515670">Hypernym<pointer/>
<pointer refs="n02159955">Part holonym<pointer/>
<def>any of the thin-walled extensions of the tracheae of insects<def/>
<synset/>