<synset id="n00720166" type="n">
<lex_filenum>04<lex_filenum/>
<word lex_id="0">ball-buster<word/>
<word lex_id="0">ball-breaker<word/>
<pointer refs="n00719705">Hypernym<pointer/>
<def>a job or situation that is demanding and arduous and punishing<def/>
<example>Vietnam was a ball-breaker<example/>
<synset/>