This one gets more interesting as you delve deeper! Here are the
apparent occurrences of the feminine PLURAL, to add to the feminine
SINGULAR forms which I listed earlier:
B."YNOWT EZK 10:2,2,6,6,7,7
B."YNOWT"YNW. GEN 26:28; JDG 11:10
B."YNOT"YNW. JOS 22:34 (this is incorrectly tagged in WTS!)
B."YNOTFM GEN 42:23; 2SA 21:7; JER 25:16
Forms like B."YN"YNW. also exist, even in the same verse as
B."YNOWT"YNW. (GEN 26:28). No women involved, so so much for that
suggestion. I would surmise that B."YNOWT is the plural of this
homonym of B.AYIT [compare B.FNOWT as the plural of B.AT = daughter],
just as B."YNIYM would be the plural of B.AYIN . But I can only guess
why the choice is made between one or the other.