The ordinal form of the number eight.

The person or thing in the eighth position. / One of eight equal parts of a whole. / (slang) An eighth of an ounce, or approximately 3.5 grams, of marijuana or other drugs.

to divide by eight

The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.

(US, military, slang) incorrect; false

The cardinal number occurring after seventy-nine and before eighty-one, represented in Roman numerals as LXXX and in Arabic numerals as 80.

The ordinal form of the number eighty-one, describing a person or thing in position number 81 of a sequence.

One of eighty-one equal parts of a whole.

The cardinal number following eighty and preceding eighty-two.

The ordinal form of the number twenty-eight.