(n) :
an electronic device that receives a weak or low-level signal and retransmits it at a higher level or higher power; (firearms) a gun that has a store of cartridges and does not need reloading after each shot
(n) :
an electronic device that receives a weak or low-level signal and retransmits it at a higher level or higher power; (firearms) a gun that has a store of cartridges and does not need reloading after each shot