Merriam-Webster Collegiate Dictionary - zeugma

 noun  Etymology: Middle English zeuma, from Medieval Latin, from Latin ~, from Greek, literally, joining, from zeugnynai to join; akin to Latin jungere to join — more at yoke  Date: 15th century the use of a word to modify or govern two or more words usually in such a manner that it applies to each in a different sense or makes sense with only one (as in “opened the door and her heart to the homeless boy”)