Changes in society are sometimes slow to be reflected in dictionaries. While the Encyclopedia Britannica notes that "[b]y the late 1970s and early '80s, the steel industry [in Pittsburgh, Pennsylvania] had virtually disappeared—a result of foreign competition and decreased demand," at least two recently published English-Japanese dictionaries haven't heard the news yet:
A recent English-English dictionary needs updating, too:
a city in the US in south-western Pennsylvania; a port where the Allegheny and Monongahela rivers converge to form the Ohio; steel industry. Pop 369 879 (1990).
(February 16, 2003)