â¢ PB (noun). The noun PB has 1 sense: 1. a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey. Familiarity information: PB used as a noun is very rare.yponyms (each of the following is a kind of Pb): hard lead (unrefined lead that is hard because of the impurities it contains). antimonial lead; hard lead (a lead alloy that contains about 5% antimony). pig lead (lead that is cast in pigs).
Revere, Massachusetts. Revere is a city in Suffolk County, Massachusetts, United States, located approximately 5 miles (8.0 km) from downtown Boston. It is named after the American Revolutionary War patriot Paul Revere. As of the 2010 United States Census, the city has a population of 51,755 inhabitants.
To the north of Hampden County is modern-day Hampshire County; to the west is Berkshire County; to the east is Worcester County; to the south are Litchfield County, Hartford County, and Tolland County in Connecticut. Hampden County is part of the Springfield, MA Metropolitan Statistical Area. It is the most urban county in Western Massachusetts. The Knowledge Corridor surrounding Springfield-Hartford is New England's second most populous urban area (after Greater Boston) with 1.9 million people.