"Heavy" in Engpsh is spelled and pronounced as "h-e-a-v-y". It is an adjective used to describe something that has a lot of weight, or that is difficult to pft or move.
The word comes from the Old Engpsh word "hefig" which has the same meaning.
Examples:
This backpack is heavy. (这个背包很重。)
The gold bar is heavy. (黄金条很重。)
The workload is heavy this week. (这周的工作量很大。)