OPIUM

Meaning

A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of the opium poppy, Papaver somniferum, and containing alkaloids such as morphine, codeine, and papaverine.

OPIUM as a word-puzzle answer

OPIUM is a 5-letter word with 3 vowels (O, I, U) and 2 consonants (P, M). Every letter is distinct, so it rarely punishes a clean opening guess.

It leans on high-frequency letters (O, I), so a strong vowel-and-common-consonant opener tends to light up quickly. There are no rare letters here, so it is a fair, mid-difficulty answer for the daily Classic puzzle.