(derogatory, ethnic slur, idiomatic) An insult, a term of contempt for a black person.

(dated, ethnic slur) A slave employed in manual labor, as opposed to a house nigger. / (ethnic slur) A black person of limited intellect, likened to an uneducated field hand.

(ethnic slur, offensive, idiomatic) An inferior black person whose intellect is compared to that of a field hand. / (dated, now offensive) A black slave employed in manual labor.

plural of New Zealand spinach

A plant whose leaves are used as spinach-like greens, Tetragonia tetragonioides

double or quits

(humorous) A phrase indicating that something must be done directly without delays or deviations.

(mathematics) Any of a sequence of numbers related to the Fibonacci numbers. L(0) = 1, L(1) = 1, and then, for all n larger than 1, L(n) = L(n-1)+L(n-2)+1.

Alternative form of gram-negative (Note: The form with capital G is the only form given in the American Heritage Dictionary. "Gram" is actually a proper name.)

Archaic form of New York.