an instrument

The Wedge is a device that tapers to a thin edge, usually made of metal or wood, and used for splitting, lifting, or tightening, such as to secure a hammer head onto its handle.

The wedge is considered one of the six simple machines. Wedges have been used since prehistoric times to split logs and rocks; for rocks, wooden wedges, caused to swell by wetting, have been used. In terms of its mechanical function, the screw may be thought of as a wedge wrapped around a cylinder.

The wedge tailed eagle lives in the forest

Utility wedge. Similar to a gap wedge or approach wedge.

It is a wedge.