buttressing >> /ˈbʌtrɪs/
Definition: [verb] Provide (a building or structure) with buttresses.
Example: we buttressed the wall as it was showing signs of cracking and collapse
Definition: [verb] Increase the strength of or justification for; reinforce.
Example: authority was buttressed by religious belief
Definition: [noun] A structure of stone or brick built against a wall to strengthen or support it.
Example: the cathedral's massive buttresses
Definition: [noun] A source of defence or support.
Example: the political police were the main buttress of the regime