What is the meaning of Point-blank?

Very close; not touching but not more than a few metres (yards).

The distance between a firearm and a target where a projectile in flight is expected to strike the centre of the target without adjusting the elevation of the firearm.

The angle between an airplaneā€™s gun turret and a target aircraft, where a projectile in flight is expected to strike the centre of the target without adjusting the angle of the gun.

Disconcertingly straightforward or blunt; outright.

In a direct manner, without hesitation.

Source: wiktionary.org