expressexpressexpresses3 (pluralexpresses) (alsoexpress train) nouna fast train that does not stop at all stationsexpressexpressexpressesexpressedexpressing1verb (expresses, expressing, expressed)to say or show how you think or feel: She expressed her ideas well.expressexpress2adjectivethat goes or is sent very quickly: an express letteran express coach▶ expressadverb: I sent the parcel express.