buttress something up
1. Lit. to brace something; to provide architectural support for something. We have to buttress up this part of the wall while we work on it. The workers buttressed the wall up with heavy timbers.
2. Fig. to provide extra support, often financial support, for something. We rounded up some money to buttress the company up through the sales slump. The loan buttressed up the company for a few months.
See also: up