As a Noun: 1. A relatively short period of time. English = while. 2. A short period of time between two events. English = interval. Formal English = interim. As a Verb or Adjective: 1. To last for only a short period of time. English = (be) brief, (be) momentary, (be) fleeting. 2. To be intended to be used only until something more permanent is arranged or produced. English = (be) temporary. Formal English = (be) interim, (be) provisional. As Modifier: 1. Used in between two phrases or clauses to mean the action in the second happens at the same time as the action in the first. English = while, during. 2. Used next to a verb to mean that the action of the verb lasts for only a short period of time. English = briefly, momentarily, fleetingly.