A form of the possessive case of "I" used as an attributive adjective; relating to or belonging to "me".
Related signs: YOUR.
Gloss: MY SISTER+BROTHER THREE-OF-THEM #ALL "VERY" STERN+SERIOUS.
English equivalent: My three siblings are all quite solemn.
ASL digit written contributed by the ASLwrite community, 2017. Note: it's a left-handed sign. Reverse the handshape for right-handed.