eighth

adj

1. (not-comparable)The ordinal form of the number eight.

   “Consequently, in the initial position the white pieces and pawns are placed on the first and second ranks; the black pieces and pawns on the eighth and seventh ranks.”

   “In 2023, the birthrate fell for the eighth consecutive year to 0.72, the lowest in the world, from 1.24 in 2015, raising concerns over the economic shock to society from such a rapid pace.”

noun

1. The person or thing in the eighth position.
2. One of eight equal parts of a whole.

   “Two bits equals two eighths of a dollar.”

   “Scientists from the University of Pennsylvania have determined that the young skull is only an eighth as strong as an adult one.”

3. (slang)An eighth of an ounce, or approximately 3.5 grams, of marijuana or other drugs.

   “At midday he’d found an ageing eighth of hash in a drawer, a little bundle of cellophane.”

4. An interval by doubling in pitch frequency.

verb

1. (transitive)To divide by eight.

   “The first step is to eighth the script out. See figure 3.6 overleaf. Eighthing a script is subjective.”