adj. 25B6; adjective
rusty wire : RUSTED, rust-covered, corroded, oxidized; tarnished, discoloured.
his hair was a rusty colour : REDDISH-BROWN, chestnut, auburn, tawny, russet, coppery, copper, Titian, red.
my French is a little rusty : OUT OF PRACTICE, below par; unpractised, deficient, impaired, weak.