Pal is a slur used to describe Palestinians in a derogatory way. Self-explanatory
The word Pal is a racial slur that has been used historically to degrade and dehumanize palestinians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to palestinians. If you are unsure about whether or not it is appropriate to use the word Pal, it is best to err on the side of caution and avoid using it in any situation.