Definition of "TB"

(computing, formal) Abbreviation of terabyte.  examples

(computing, informal) Abbreviation of tebibyte.  examples

(sports) Initialism of Tampa Bay (a city in Florida).  examples

(pathology) Tuberculosis.

(baseball) Initialism of total bases.  examples

Abbreviation of throwback.  examples

(military, nautical) Initialism of torpedo boat.