magnetic head

from WordNet (r) 3.0 (2006)

magnetic head
    n 1: an electromagnet (as on a tape recorder) that converts
         electrical variations into magnetic variations that can be
         stored on a surface and later retrieved

from The Collaborative International Dictionary of English v.0.48

magnetic head \magnetic head\ n. (Electronics)
   An electromagnet (as on a tape recorder) that converts
   electrical variations into magnetic variations that can be
   stored on a magnetizable surface and later retrieved.
   [WordNet 1.5]