A slice of a tree is called a "cross-section" or "tree cookie." This term refers to a circular disc cut from the trunk of a tree, which can reveal its growth rings and other structural features. Cross-sections are often used for studying the age and health of the tree, as well as for artistic and educational purposes.
The hedgehog slice is called the hedgehog slice because it looks like a hedgehog.
the tree's age, if it was lacking water and stuff.
Slice
chop
slice or wedge
cut2. slice 3. sand
A slice of salami is often referred to as a "slice" or simply "salami slice." In culinary contexts, it may also be called a "piece" of salami. Depending on the thickness, it might be described as a "thin slice" or "thick slice."
A slice
Segments.
A slice of bacon is known as a rasher.
In England it is called a "fish slice".
A region of a circle called a pie slice is also called a sector. The sector is one of the main slices of a circle, the other is called a segment.