PB
— Noun
– English
～ a unit of information equal to 1000 terabytes or 10^15 bytes
PB
— Noun
– English
～ a unit of information equal to 1024 tebibytes or 2^50 bytes
Pb
— Noun
– English
～ a unit of information equal to 1000 terabits or 10^15 bits
pb
— Noun
– English
～ a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey; "the children were playing with lead soldiers"