The Collaborative International Dictionary of English v.0.48:

Enforce \En*force"\, v. t. [imp. & p. p. Enforced; p. pr. &
   vb. n. Enforcing.] [OF. enforcier to strengthen, force, F.
   enforcir; pref. en- (L. in) + F. force. See Force.]
   1. To put force upon; to force; to constrain; to compel; as,
      to enforce obedience to commands.
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            Inward joy enforced my heart to smile. --Shak.
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   2. To make or gain by force; to obtain by force; as, to
      enforce a passage. "Enforcing furious way." --Spenser.
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   3. To put in motion or action by violence; to drive.
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            As swift as stones
            Enforced from the old Assyrian slings. --Shak.
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   4. To give force to; to strengthen; to invigorate; to urge
      with energy; as, to enforce arguments or requests.
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            Enforcing sentiment of the thrust humanity. --Burke.
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   5. To put in force; to cause to take effect; to give effect
      to; to execute with vigor; as, to enforce the laws.
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   6. To urge; to ply hard; to lay much stress upon.
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            Enforce him with his envy to the people. --Shak.
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