It means "fingerprint." You can get a glass with the fingerprint of a BAD bigwig by getting the chef's job at the BAD Bistro. It can help you later with a security door.
You use the spy decoder that you get from Director D at the Spy Headquarters. Setting the red letter L next to the green letter F lines up the other code letters with what they really mean.
Using the decoder and the letter code, which is L=F, the word LOTMKXVXOTZ translates as "fingerprint", which is what you need from the BAD Bistro. (see the related question)
Well, if you mean "What is the pass-code in Poptropica for Spy Island?", then the answer is "laser hair removal".
spy 23
"opposite direction"
you save the last spy and she will give you a pass code and the goggles
in the docks there is a bin with a face
if you mean the bow you get it after you save the second spy
say what
Spy Island is island #6. After Spy Island is Nabooti Island #7
the pass code is BALDSPIES
Laser Hair Removal That is the code.
Besides the spy that is in the garbage can at the docks (who gives you the Bistro code), there is a spy on top of a building by HQ that will give you a clue that will say something like To access the top B.A.D. headquarters, you need the main guy's fingerprint.