Fruit & S. S. Co., 386 U. S. 198, 201 (1949). See also Stenberg v. Carhart, 530 U. S. 914, 942 (2000) (“When a statute includes an explicit definition, we must follow that definition . . . .”); 2A N. Singer & J. Singer, Sutherland on Statutory Construction §47:7, pp. 298-299, and nn. 2-3 (7th ed. 2007) (hereinafter Singer).
The CSA, to be sure, also defines the term “felony.” The language and structure of the statute, however, indicate that Congress used the phrase “felony drug offense” as a term of art defined by §802(44) without reference to §802(13). First, Congress stated that “[t]he term ‘felony drug offense’ means an offense that is punishable by imprisonment for more than one year.” §802(44) (emphasis added). “As a rule, [a] definition which declares what a term ‘means’ . . . excludes any meaning that is not stated.” Colautti v. Franklin, 439 U. S. 379, 392-393, n. 10 (1979) (some internal quotation marks omitted). See also Groman v. Commissioner, 302 U. S. 82, 86 (1937); 2A Singer §47:7, p. 306, and n. 20.
Second, the term “felony” is commonly defined to mean a crime punishable by imprisonment for more than one year. See, e. g., 18 U. S. C. § 3559(a) (classifying crimes with a maximum term of more than one year as felonies); Black’s Law Dictionary 651 (8th ed. 2004) (defining “felony” as “[a] serious crime usu[ally] punishable by imprisonment for more than one year or by death”). Section 802(44)’s definition of “felony drug offense” as “an offense ... punishable by imprisonment for more than one year,” in short, leaves no blank to be filled by §802(13) or any other definition of “felony.”
Third, if Congress wanted “felony drug offense” to incorporate the definition of “felony” in § 802(13), it easily could have written §802(44) to state: “The term ‘felony drug offense’ means a felony that is punishable by imprisonment for more than one year . . . .” See Roberson, 459 F. 3d, at 52. Congress has often used that drafting technique — i. e., re