To advance gradually but steadily, To advance with an abrupt increase of speed, transitive verb_ To form by heating and hammering; to beat into any particular shape, as a metal, To form or shape out in any way; to produce; to frame; to invent, verb_ To form or create with concerted effort, move ahead steadily, noun_ Furnace or hearth where metals are heated prior to hammering them into shape, Workshop in which metals are shaped by heating and hammering them