<synset id="n10357907" type="n">
<lex_filenum>18<lex_filenum/>
<word lex_id="0">night owl<word/>
<word lex_id="0">nighthawk<word/>
<word lex_id="0">nightbird<word/>
<pointer refs="n09619824">Hypernym<pointer/>
<def>a person who likes to be active late at night<def/>
<synset/>