Source : Webster's Revised Unabridged Dictionary (1913)

Pick-me-up \Pick"-me-up`\, n.
   A stimulant, restorative, or tonic; a bracer. [Colloq.]

Source : WordNet®

pick-me-up
     n 1: anything with restorative powers; "she needed the pickup
          that coffee always gave her" [syn: {pickup}]
     2: a tonic or restorative (especially a drink of liquor) [syn:
        {bracer}]