pb

(noun) a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey. Synonyms: lead, Pb, atomic number 82. Example: "The children were playing with lead soldiers."

(noun) a unit of information equal to 1000 terabits or 10^15 bits. Synonyms: petabit, Pbit, Pb.

(noun) a unit of information equal to 1000 terabytes or 10^15 bytes. Synonyms: petabyte, PB.

(noun) a unit of information equal to 1024 tebibytes or 2^50 bytes. Synonyms: petabyte, pebibyte, PB, PiB.