"Tar" is a 3-letter word for old salt, in the nautical sense.
new
old
Old age.
Reo
Another 3 letter word for respect is awe.
A 3 letter word meaning pallid is wan.
There are several older game consoles that are known by 3-letter names, such as the NES (Nintendo Entertainment System), PS1, and PS2.
A 3 letter word for AARP members is Boa.
pontoon
The 3 letter word for a group of kangaroos is mob.
the 3 letter word is BDY