mammal; usually short in stature, by comparison; always has large breasts; the Meaghan is characterized by a loud, colorful, and charismatic personality; usually has some kind of fixation with cartoons or cartoon characters (ex. spongebob, little mermaid); has extremely addictive tendencies. Guys want to grab those bad boys and girls are always jealous.
"my boobs are so small. i'm definitely no Meaghan."
"are you watching disney channel again? i swear you're becoming a Meaghan."