1. n. the penis, especially if erect. (Usually a nickname. Alludes to color.) Now, put Barney away and let’s talk about our relationship.

2. n. a nerd; a wimp; an unattractive male. (From the Flintstones character or the children’s dinosaur character.) If you weren’t such a Barney, you’d stick up for your own rights.

3. n. a good-looking guy. Man she’s really found herself a Barney!