Definition of Easterly
This word, when used alone, will be construed to mean “due east.” But that is a rule of necessity growing out of the indefiniteness of the term, and has no application where other words are used for the purpose of qualifying its meaning. Where such is the case, it means precisely what the qualifying word makes it mean. See also East.
That's the definition of Easterly in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.