1   (TTS Sound)

The noun 1 has 1 sense

• one, 1, I, ace, single, unity -- (the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one")

The adj 1 has 1 sense

• one, 1, i, ane -- (used of a single unit or thing; not two or more; "`ane' is Scottish")