Answer: buttress

AnswerCrossword Clue
BUTTRESSStrengthen
BUTTRESSSupport
BUTTRESSSupport firmly.
BUTTRESSBulwark.
BUTTRESSStrengthening structure.
BUTTRESSSupporting wall structure.
BUTTRESSProp.
BUTTRESSSupporting structure
BUTTRESSBrace
BUTTRESSMake stronger or defensible
buttressto support
buttressany support
buttressto give encouragement or support.
buttressprojecting support built into or against a wall
buttressto prop up