1. Verb.  To surreptitiously penetrate, enter or gain access.
  2. Verb.  To cause a fluid to pass through a substance by filtration.
  3. Verb.  To send soldiers through gaps in the enemy line.
  4. Verb.  (intransitive, of an intravenous needle) To move from a vein, remaining in the body.

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This entry was last updated on RefTopia from its source on 3/20/2012.