Meanings of blunt wedge in English

It had a blunt wedge-shaped front that smashed through trunks without the slightest resistance.

The vanguard was to be marshalled with its three ranks so adjusted that its general form was that of a blunt wedge.

It belched a huge gout of flame and charged the fractured oak tree again, striking with its great blunt wedge of a head.

Ach!' He shudders again, violently, at the thought of those dainty naked feet being penetrated, in one clumsy thrust, by the blunt wedge of metal.

I started channeling our force into the staff, focusing it into a blunted wedge in front of us.