a small gas discharge lamp containing neon gas, sometimes with other noble gases to add colour
a lamp consisting of a small gas-discharge tube containing neon at low pressure; luminescence is produced by the action of currents at high frequencies that are wrapped a few turns around the tube
lamp which produces light by running an electrical current through a tube filled with neon gas
a small, low-wattage lamp used as an indicator or nightlight; typically consists of a pair of electrodes sealed in a bulb containing neon at low pressure