Definitions of space:

• noun:   the unlimited expanse in which everything is located

  Example: "They tested his ability to locate objects in space"

• noun:   a blank area

  Example: "Write your name in the space provided"

• noun:   a blank character used to separate successive words in writing or printing

  Example: "He said the space is the most important character in the alphabet"

• noun:   one of the areas between or below or above the lines of a musical staff

  Example: "The spaces are the notes F-A-C-E"

• noun:   an area reserved for some particular purpose

  Example: "The laboratory's floor space"

• noun:   an empty area (usually bounded in some way between things)

  Example: "The architect left space in front of the building"

• noun:   (printing) a block of type without a raised letter; used for spacing between words
• noun:   the interval between two times

  Example: "It all happened in the space of 10 minutes"

• verb:   place at intervals

  Example: "Space the interviews so that you have some time between the different candidates"

• name:  A surname (very rare: popularity rank in the U.S.: #27072)