“وَ” (wa)a joining word meaning “and.” It connects this word to what came before.Corpus grammarCONJ — prefixed conjunction wa (and).
“زِنُ” (zinu)means “And weigh” in this verse. It is a verb. an action or state word. Here it is second person — masculine — plural.Corpus grammarV — second person masculine plural imperative verb.
“وا” (wā)an attached pronoun meaning “you all.” It shows who is being addressed.Corpus grammarPRON — second person masculine plural subject pronoun.