A police officer testified last month she boarded Lil Wayne's bus after a Beacon Theatre concert because she smelled marijuana.
She said that while on the bus she saw him try to hide a gun.
Defense lawyer Stacey Richman wants the charges dismissed. She says police falsely claimed they smelled marijuana so they could illegally board the bus.
The rapper's real name is Dwayne Carter. He has pleaded not guilty and is free on $70,000 bail.
