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"primary" is also used as a crossword clue. If that's what you saw, the answer is often main (4 letters).
Definitions
a preliminary election where delegates or nominees are chosen
Word origin
Borrowed from Latin prīmārius (“of the first (rank); chief, principal; excellent”), from prīmus (first; whence the English adjective prime) + -ārius (whence the English suffix -ary); compare the French primaire, primer, and premier. Doublet of premier.
Used in a sentence
“Children attend primary school, and teenagers attend secondary school.”
“the church of Christ, in its primary institution”
“, Book II, Chapter VIII These I call original, or primary, qualities of body.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“first in importance”7 letters
02“Main or first”7 letters
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