Situated in or moving towards the west.(adjective)
In a westward direction.(adverb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "westwardly" in a sentence
"Feel that giddy excitement in the air borne on a westwardly wind?"
"Dark-colored Mollisols and, especially, light-colored Alfisols are common, and were derived from eastwardly thinning loess, westwardly thinning glacial drift, glacial outwash, residuum, or alluvium."
"And then we watched, as one case arrived on the East Coast of the United States and it marched every year, westwardly."