footplate

Short definition from Wiktionary

Noun

1. 1
   The metal plate which forms the base platform of a steam locomotive and supports the boiler and the driver's cab, particularly in the United Kingdom.
2. 2
   The engineer's cab in any kind of train.
3. 3
   The flat portion at the base of the stapes; pedicel.
4. 4
   The part of a roller skate that attaches to the boot.
5. 5
   A timber in a wood frame that distributes a concentrated load.
6. 6
   A platform on which the driver's foot rests but which, unlike a pedal, has no effect.

Verb

1. 1
   To travel (or work) on the footplate of a locomotive.