noun.cousin

• … Robyne is my cuz, part of that ever-growing Fambro clan.
• … a laughing group of cousins are gathered at Jan's home ("Hi, cuzzes!" says one, upon entering) …

noun.a friend or acquaintance

• Now [Triston] McKenzie refers to [CC] Sabathia as his “cuz,” one who returned to Cleveland to watch his mentee's first playoff start …

noun.—used as a friendly way of addressing someone and especially a man or boy

conjunction.because

• “Why aren't you at work now?” “Cuz I got laid off, man!”