I think I understand what aggro means in the context of an MMO and explicitly in World of Warcraft. Arqade even has a good answer to What does "Aggro" mean?

What I am not understanding from the aforementioned links is how the term applies to an aggro deck in Hearthstone. Is an aggro deck:

• a deck which is aggressive towards attacking the opposing hero?
• a deck that aggravates the opposing hero by forcing them to attack minions instead of your hero?

I am probably reading too much into the use of the term, but each time I see aggro deck I am not sure what is being described.

I think I understand what aggro means in the context of an MMO and explicitly in World of Warcraft. Arqade even has a good answer to What does "Aggro" mean?

What I am not understanding from the aforementioned links is how the term applies to an aggro deck in Hearthstone. Is an aggro deck:

• a deck which is aggressive towards attacking the opposing hero?
• a deck that aggravates the opposing hero by forcing them to attack minions instead of your hero?

I am probably reading too much into the use of the term, but each time I see aggro deck I am not sure what is being described.