What is the adjective in sentence cold wind blew snow and dust across road?

The adjective in the sentence "Cold wind blew snow and dust across the road" is cold.

Here's why:

* Adjectives describe nouns. In this sentence, "cold" describes the noun "wind".

* Other words in the sentence are:

* "wind" is the noun being described.

* "blew" is a verb.

* "snow", "dust", and "road" are nouns.