tb

Short definition from Wiktionary

Noun

1. 1
   Abbreviation of throwback (“something that evokes memories”).
2. 2
   Tuberculosis.
3. 3
   Initialism of total bases.
4. 4
   Abbreviation of throwback.
5. 5
   Initialism of torpedo boat.
6. 6
   Initialism of torpedo bomber.
7. 7
   Initialism of trainer bomber (“a bomber that also serves as a trainer aircraft”).

Symbol

1. 1
   Abbreviation of terabyte.
2. 2
   Abbreviation of tebibyte.
3. 3
   Abbreviation of Tbit.
4. 4
   Chemical symbol for terbium.

Proper noun

1. 1
   Initialism of Tampa Bay: a bay of Florida, United States, on which are located the cities of Tampa and St. Petersburg.