/wʌn/
One has 14 different meanings across 4 categories:
To cause to become one; to gather into a single whole; to unite.
being a single entity made by combining separate components
"three chemicals combining into one solution"
eminent beyond or above comparison
"matchless beauty"
"the team's nonpareil center fielder"
"she's one girl in a million"
"the one and only Muhammad Ali"
"a peerless scholar"
"infamy unmatched in the Western world"
"wrote with unmatchable clarity"
"unrivaled mastery of her art"
Of a period of time, being particular.
The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.
One thing (among a group of others); one member of a group.
The word "one" comes from the Middle English term oon, which traces back to Old English ān meaning "single." Its roots extend through Proto-Germanic and Proto-West Germanic directly to the original Proto-Indo-European form *h₁óynos.