Sentence:  These are not questions which can be decided by reference to our <WSD>space</WSD> intuitions, for our intuitions are confined to Euclidean <WSD>space</WSD>, and even there are insufficient, approximative. 
Meaning of the word marked with <WSD> tags:  Physical extent in all directions, seen as an attribute of the universe (now usually considered as a part of space-time), or a mathematical model of this. (from 17thc.)