Meaning of PB

WordNet Dictionary
	Definition:		[n]  a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull gray; "the children were playing with lead soldiers"
	Websites:
	Synonyms:		atomic number 82, lead
	See Also:		antimonial lead, cerussite, galena, hard lead, metal, metallic element, pig lead, white lead ore