T

T
tail recursion
talk mode
talker system
TAN
tanked
TANSTAAFL
tape monkey
tar and feather
tarball
tardegy
taste
tayste
TCB
TCP/IP
TECO
tee
teergrube
teledildonics
ten-finger interface
tense
tentacle
tenured graduate student
tera-
teraflop club
terminak
terminal brain death
terminal illness
terminal junkie
test
TeX
text
thanks in advance
That's not a bug, that's a feature!
the literature
the network
the X that can be Y is not the true X
theology
theory
thinko
This can't happen
This time, for sure!
thrash
thread
three-finger salute
throwaway account
thud
thumb
thundering herd problem
thunk
tick
tick-list features
tickle a bug
tiger team
time bomb
time sink
time T
times-or-divided-by
timesharing
TINC
Tinkerbell program
TINLC
tip of the ice-cube
tired iron
tits on a keyboard
TLA
TMRC
TMRCie
TMTOWTDI
to a first approximation
to a zeroth approximation
toad
toast
toaster
toeprint
TOFU
toggle
tool
toolchain
toolsmith
toor
top-post
topic drift
topic group
TOPS-10
TOPS-20
TOS
tourist
tourist information
touristic
toy
toy language
toy problem
toy program
trampoline
trap
trap door
trash
trawl
tree-killer
treeware
trit
trivial
troff
troglodyte
troglodyte mode
Trojan horse
troll
Troll-O-Meter
tron
troughie
true-hacker
tty
tube
tube time
tunafish
tune
turbo nerd
Turing tar-pit
turist
Tux
tweak
TWENEX
twiddle
twilight zone
twink
twirling baton
two pi
two-to-the-N