NOTE: refers to a sum of money, not the event of imposing taxes (Sense 2)
You don't have to pay levies on merchandise in duty free shops.
There is a sizable levy on these luxury items.
WordNet 3.0 Sense Numbers: 1
NOTE: implies an agent/actor in a role as initiator or collector of taxes.
NOTE: this sense is a nominalization of the verb 'levy'
The legislature's levy of a new tax on cigarettes will raise revenues for the state.
It was hard to enforce the levy of these types of business transactions.
WordNet 0.0 Sense Numbers: 1b
NOTE: this sense is a nominalization
Such a levy of young men will not have much public support.
WordNet 3.0 Sense Numbers: 2
NOTE: refers to people, not the event of recruiting them (Sense 3)
The lightly armed local levies were no match for the heavy armor of the enemy.
WordNet 0.0 Sense Numbers: 2b