flag day
- n commemorating the adoption of the United States flag in 1777
flag of truce
- n flag consisting of a piece of white cloth that is hoisted to signal surrender or to ask for a truce
flag smut
- n smut affecting leaves and stems of cereals and other grasses
flag smut fungus
- n a smut fungus causing a smut in cereals and other grasses that chiefly affects leaves and stems and is characterized chains of sori within the plant tissue that later rupture releasing black masses of spores
flag stop
- n a small railway station between the principal stations or a station where the train stops only on a signal