Wiktionary
ACL, noun. (anatomy) Initialism of anterior cruciate ligament.
ACL, noun. (computing) Initialism of access control list.
ACL, noun. (business) action-centred leadership
Wise words
Words - so innocent and powerless as they are, as standing
in a dictionary, how potent for good and evil they become in
the hands of one who knows how to combine them.