{prep. phr.} Halfway up or down; referring primarily to flagposts, but may be used jokingly. * /When a president of the United States dies, all flags are flown at half mast./
{prep. phr.} Halfway up or down; referring primarily to flagposts, but may be used jokingly. * /When a president of the United States dies, all flags are flown at half mast./