frankfurt on the main(n = noun.location) frankfort, frankfurt - a German city; an industrial and commercial and financial center;
is a kind of city, metropolis, urban center
is a part of deutschland, federal republic of germany, frg, germany

coup de main, electric main, frankfurt, gas main, in the main, main, main clause, main course, main deck, main diagonal, main drag, main entry word, main file, main line, main memory, main office, main point, main road, main rotor, main sequence, main street, main yard, might and main, riser main, sewer main, water main