This sign is good to use if you mean principal as in the leader
of a school or "the school principal."
Touch the tip of the middle finger of the "P-hand" to the back of a
palm-down S-hand twice.
This sign refers to the person "principal" of a school. The sign "principle"
spelled with an "le" instead of "al" uses a different sign.
PRINCIPAL:




There is quite a bit of variation in ASL. Don't get hung up on the
small details. My friend, Sean Benson signs "principal" by
starting with the dominant hand along side the non-dominant fist.
He then does a bit of a circular movement wherein he swings the "P"
hand up into position above the non dominant hand and then brings it
down once firmly.
PRINCIPAL (another example)




Note:
I have another friend (Deaf) who the sign PRINCIPAL with the
non-dominant hand in a palm handshape facing down (instead of in a
fist shape).
If you mean some other type of "principal" (other than the leader
of a school) you should use a different sign than the "P" on the
back of the fist. For example:
See: MAIN
See: TOP
See: FIRST
If you mean "principle" (note the different spelling) as in a
"guiding rule" then see: PRINCIPLE
You can learn
American
Sign
Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars