1 gather (together), get or bring or come or together, amass, accumulate, assemble, compile, pile up, heap up, rack up; convene, congregate, converge, rally, meet:
A crowd had collected outside the mayor's home. They were collecting evidence for their case.
2 summon (up), draw (up), muster, gather (up), concentrate:
She collected all her courage to ask for an increase in salary.