bhadra
sk for buttress
A buttress is an architectural structure built against or projecting from a wall which serves to support or reinforce the wall. Buttresses are fairly common on more ancient buildings, as a means of providing support to act against the lateral forces arisingout of the roof structures that lack adequate bracing.
Source
from Sriranjani Srinivasan, 'Analyzing the Impact of Indian Architecture on the Architecture of Cambodia, Thailand and Indonesia', International Journal of Architectural and Environmental Engineering, vol:13, No:5, 2019.