one1 S1 W1
the number 1:
They had one daughter.
one hundred and twenty-one pounds
Come back at one (=one o'clock).
Katie's almost one (=one year old).
a small number of people or things [= a few]:
There are one or two things to sort out before I leave.
one or two of
One or two of us knew him quite well.
3 British English
alone or in pairs, rather than in large numbers or groups:
Guests arrived in ones and twos.