Defense Abbreviations

[PanJack]

I'm sure I'm just overlooking some documentation, but can I have help on the following defense abbreviations? Thanks.
KD =
FF =
PD =
TFL =
Sft = Sfty = safeties?
FR =
MIss = MT? = missed tackle?

And those I think I know:
Tck = tackles
Int = interceptions
Sck = sacks
Hur = hurried passes
DTD = defensive touchdowns
Tar = passing target when man-to-man coverage
CtA = catches allowed in man-to-man
MT = missed tackles
BFG = blocked field goals
BXP = blocked extra points
BP = blocked punts

[brooks_piggott]

Knockdowns
Forced Fumbled
Passes Defensed
Tackle for Loss
Safety
Fumble Recovered
Miss/MT = Missed Tackle

[PanJack]

Thanks.