choking coil

from WordNet (r) 3.0 (2006)

choking coil
    n 1: a coil of low resistance and high inductance used in
         electrical circuits to pass direct current and attenuate
         alternating current [syn: {choke}, {choke coil}, {choking
         coil}]

from The Collaborative International Dictionary of English v.0.48

Choking coil \Choking coil\ (Elec.)
   A coil of small resistance and large inductance, used in an
   alternating-current circuit to impede or throttle the
   current, or to change its phase; -- called also {reactance
   coil} or {reactor}, these terms being now preferred in
   engineering usage.
   [Webster 1913 Suppl.] Choky