How literal is this phrase?

Sample examples at http://tinyurl.com/is-it-lit

engine room:

Definitions:

  1. a room (as on a ship) in which the engine is located

Examples:

  1. 1916 , HMS King Edward VII was mined off Cape Wrath , and with both engine rooms flooded HMS King Edward VII capsized 12 hours later and sunk . Kinsha Name Origin
  2. shutdown . Ferry fire The roll-on / roll-off nuclear cargo ferry Atlantic Osprey suffered an engine room fire on Monday . The vessel , formerly known as the Arneb , was en
  3. powerhouse providing infectious enthusiasm . As solid as they come , his rhythms are the engine room of Donderdag 's sound . He has a wealth of experience and having collaborated with
  4. out patient 's department , surgical casualty , the dispensary , operating theatres , the engine room , automatic telephone exchange , Pathological Laboratory , the chapel , Nurses ' dining room
  5. a Naval Officer came out to the Camp and took full particulars of deck and engine room crew and that night , cars were sent to take all the men into the

Note: Please select the answers below carefully based on the definition which occurs frequently in the examples

Step 1: score of 0-5 for how literal is the use of "engine" in the phrase "engine room"
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