A figure of speech in which an adjective or verb is used with two nouns but is appropriate to only one of them or has a different sense with each, as in "During the race he broke the record and his leg"
[Late 16th century. Via Latin < Greek, "joining"]
zeugma. Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. http://encarta.msn.com/dictionary_/zeugma.html (accessed: July 24, 2009).
Bob used to be a circus clown. Until one day he just refused to perform the spectacular finalé. That day he was not fired from the cannon, but from his job.