from
The Collaborative International Dictionary of English v.0.48
T \T\ (t[=e]),
the twentieth letter of the English alphabet, is a nonvocal
consonant. With the letter h it forms the digraph th, which
has two distinct sounds, as in thin, then. See Guide to
Pronunciation, [sect][sect]262-264, and also [sect][sect]153,
156, 169, 172, 176, 178-180.
[1913 Webster] The letter derives its name and form from the
Latin, the form of the Latin letter being further derived
through the Greek from the Ph[oe]nician. The ultimate origin
is probably Egyptian. It is etymologically most nearly
related to d, s, th; as in tug, duke; two, dual, L. duo;
resin, L. resina, Gr. "rhti`nh, tent, tense, a., tenuous,
thin; nostril, thrill. See {D}, {S}.
[1913 Webster]
{T bandage} (Surg.), a bandage shaped like the letter T, and
used principally for application to the groin, or
perineum.
{T cart}, a kind of fashionable two seated wagon for pleasure
driving.
{T iron}.
(a) A rod with a short crosspiece at the end, -- used as a
hook.
(b) Iron in bars, having a cross section formed like the
letter T, -- used in structures.
{T rail}, a kind of rail for railroad tracks, having no
flange at the bottom so that a section resembles the
letter T.
{T square}, a ruler having a crosspiece or head at one end,
for the purpose of making parallel lines; -- so called
from its shape. It is laid on a drawing board and guided
by the crosspiece, which is pressed against the straight
edge of the board. Sometimes the head is arranged to be
set at different angles.
{To a T}, exactly, perfectly; as, to suit to a T. [Colloq.]
[1913 Webster]