to help or support someone or something The court's decision strikes a blow for every little guy that's ever been kicked around by a big company.Don't you wish you could think of a good way to strike a blow for change?
to do something to support an idea or to change a situation to something which you believe is good He claims to be striking a blow for gender equality by employing an equal number of men and women.This latest agreement will strike a blow for free trade within the EU.