bossy (adj.) Look up bossy at Dictionary.com
1540s, "swelling, projecting and rounded, decorated with bosses" from boss (n.2). Meaning "domineering, fond of ordering people about" is recorded 1882, from boss (n.1) + -y (2). As a common cow name it represents Latin bos "cow" (from PIE root *gwou- "ox, bull, cow").