struck jury

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A jury chosen through a process by which each party eliminates candidates from a larger panel of potential jurors until it is reduced to the required number.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun law A special jury, composed of persons having special knowledge or qualifications, selected by striking from the panel of jurors a certain number for each party, leaving the number required by law to try the cause.