Liberal Dictionary English Dictionary
noun
- an energetic, sometimes boisterous girl whose behavior and pursuits, especially in games and sports, are considered more typical of boys than of girls.
noun
- a girl who acts or dresses in a boyish way, liking rough outdoor activities
1550s, “rude, boisterous boy,” from Tom + boy; meaning “bold or immodest woman” is attested from 1570s; that of “girl who acts like a spirited boy” is first recorded 1590s.