definition of
one

[1] #1 one s. [1, i, ane] used of a single unit or thing; not two or more; "'ane' is Scottish". wn

[2] #2 one n. [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". wn

[3] #3 one n. a single person or thing; "he is the best one"; "this is the one I ordered". wn

[4] #4 one s. [unitary] having the indivisible character of a unit; "a unitary action"; "spoke with one voice". wn

[5] #5 one s. of the same kind or quality; "two animals of one species". wn