text: both parties begin with the statutory text most directly at issue,disputing when a state offense here,arson is described in an enumerated federal statute here,i.luna,armed principally with black law dictionary,argues that described in means expressed or set forth in which,he says,requires the state offense to include each one of the federal law elements.brief for petitioner the government,brandishing dictionaries of its own,contends that the statutory phrase has a looser meaning that describing entails not precise replication,but convey ance of an idea or impression or of a thing central features.brief for respondent on that view,described in,as opposed to the more precise defined in sometimes found in statutes,denotes that the state offense need only incorporate the federal law core,substantive elements.