Also known as a joshua. Generally means to be incredibly dashing, knightly, and all-around a nice guy. Most of the time. Additionally common traits of a jawshya are listed as follows:

-Others-centered (not self-centered)
-Likes to grant his girlfriend (if he had one) any wish her heart fancies
-President of the awesome club of awesomeness
-Good friend
-Loyal
-Understanding
-Funny
-Sensitive (yeah, most jawshyas are softies.)
-And more.