Noun

• S: (n) prevailing westerly, westerly (the winds from the west that occur in the temperate zones of the Earth)

Adjective

• S: (adj) westerly, western (of wind; from the west)
• S: (adj) westbound, westerly, westward (moving toward the west) "westbound pioneers"

Adverb

• S: (adv) westerly (toward the west) "we began to steer away westerly"- Daniel Defoe
• S: (adv) westerly (from the west) "the wind blew westerly"