(1):
(n. collect. & pl.) People in general, or a separate class of people; - generally used in the plural form, and often with a qualifying adjective; as, the old folks; poor folks.
(2):
(n. collect. & pl.) In Anglo-Saxon times, the people of a group of townships or villages; a community; a tribe.
(3):
(n. collect. & pl.) The persons of one's own family; as, our folks are all well.