One London building, or two? (5,6)
But I've got no explanation for this one! Could you help me understand?
(Other definitions for tower bridge that I've seen before include "a fixture between two Thames boroughs" , "river crossing" , "London landmark" , "sight in the capital" .)
'two?' is the definition.
(two is a kind of whole number)
'one london building' is the wordplay.
'one' becomes 'whole' (synonyms).
'london building' becomes 'number' (I am not sure about this - if you are sure you should believe this answer much more).
'whole'+'number'='WHOLE NUMBER'
'or' is the link.
Can you help me to learn more?