1. sender(n = noun.person) transmitter - someone who transmits a message; "return to sender"
is a kind of communicator
has particulars: spammer
Derived forms verb send3, verb send2
2. sender(n = noun.artifact) transmitter - set used to broadcast radio or tv signals; Array
is a kind of set
has parts: aerial, antenna, transmitting aerial
has particulars: jammer, radio transmitter, satellite transmitter, television transmitter
Derived form verb send8
One who sends. Shak. [1913 Webster]