Learner's definition of TWICE
1 : two times : on two occasions
I only wore it twice.
I called you twice.
He has rehearsals twice a month.
He twice lost to younger opponents.
We visited them twice in 10 years.
The dictionary has been twice updated since 1993.
I've been there at least twice.
We've eaten at that restaurant once or twice. [=one or two times]
We go to Europe twice a year. [=two times every year]
The mail is delivered twice a day. [=two times every day]
2 : doubled in amount or degree
The new house is twice [=two times] as large as our old one.
He must be twice her age.
The population is twice that of Canada.
The new one costs about twice as much.
He could earn twice his present salary at the new job.
Twice two is four. [=two times two is/equals four]