Here are the definitions for the letter "t"

Tannin

A misleading term referring to tea polyphenols, which are different than the tannic acid polyphenols associated with other plants such as grapes.

Tarry

Another term describing smoky teas, defined above.

Tat

A wire mesh or burlap apparatus used to lay the leaves out for withering and fermentation

Theaflavins

Orange-red potyphenols unique to fermented black teas, and a compound formed from catechins.

Theanine

An amino acid unique to tea.

Theine

A synonym for caffeine.

Ti kuan yin

Meaning iron goddess of mercy, an especially dark and fragrant type of Oolong tea.

Tippy

A term describing high quality teas differentiated by the white or golden tips of the leaves.

Tisane

Herbal tea, that is teas produced from the leaves of plants other than the tea plant.

Tuocha

A type of brick tea using pu erh tea pressed into a bowl-shaped brick.

Twist

See Rolling.

Two and a bud

A term describing the part of the tea plant that is typically harvested, that is, the top two leaves and the bud. See also Flush.