transitive. To carry out (a plan, project, action, etc.), esp. with energetic determination; to engage in; to pursue. In early use in †to drive (a)…

transitive. To bring (something) to completion; to effect; to bring about; spec. to contract (a marriage).

transitive. To pursue, prosecute, or follow up (an action or operation) with vigour and insistence; to urge, press (a claim, point, etc.). Formerly…

To hasten or press forward (a proceeding, enterprise, etc.); to prosecute with effort, energy, or vigour; to push forward.

intransitive. More generally: to apply oneself to a task or undertaking, esp. in a purposeful or energetic manner; to get to work. Also with with or…

transferred and figurative. Substituted for ‘put’, ‘bring’, ‘get’, etc., with implication of vigorous or violent action; cf. to knock up at knock, v.…

To put more muscle into, to drive harder. U.S. (College slang).