drop light

noun3

1. •
   A lamp that is suspended, for example, by a cable.

   • A single drop light burned far back, beyond an open, once-gilt elevator. — 1939
2. •
   Such a lamp on a retractable cable, suitable for workshops and garages, where the light can easily be taken down underneath cars, trucks, locomotives, machinery, and so on, then easily put away in an overhead position.
3. •
   A window in a train carriage that is opened by pushing it downward into the door.

   • The sliding door, which is fitted with a drop light, is shrouded with bristle-type draught excluders. — 1954