Express  —v. 1 represent or make known in words or by gestures, conduct, etc. 2 refl. Communicate what one thinks, feels, or means. 3 esp. Math. Represent by symbols. 4 squeeze out (liquid or air). 5 send by express service. —adj. 1 operating at high speed. 2 also definitely stated. 3 delivered by a specially fast service. —adv. 1 at high speed. 2 by express messenger or train. —n. 1 express train etc. 2 us service for the rapid transport of parcels etc.  expressible adj. Expressly adv. (in sense 2 of adj.). [latin exprimo -press- squeeze out]