To dream of wielding a machete indicates the cutting through of old ideas in your consciousness. This will prepare you for new growth, both emotional and spiritual.
To see a machete on the ground before you indicates an opportunity to make a positive step towards personal fulfillment. You must summon the courage to pick it up.
Someone else wielding a machete at you suggests it is time to be brave enough to walk away from a situation that may be causing you to feel threatened and under attack.