Arêtes
They r called veins
A long, narrow , deep inlet of the sea between hills or mountains
A 21 foot boat refers to the length of the boat. There is not comparison between length and width. It could be narrow as on narrow boats or wide as in sea faring boats,
A light beam or beam of light is a narrow cone of light energy radiating from a small source. In optics, a ray is an idealized narrow beam of light.
i have narrow flat curved stool
It is called an isthmus.
It is called an absorption spectrum.
an alley. A narrow passage between buildings or parts of different buildings is also called an areaway.
it is called an isthmus
The narrow neck of land between Nova Scotia and New Brunswick is called the Chignecto Isthmus.
This would be called a fjord.
this is called an Isthmus
In humans and other mammals the thorax and abdomen are separated by a sheet of muscle called the diaphragm. In insects like wasps and bees where there is a narrow region between the thorax and the abdomen this is called the petiole.
This is because it is a narrow boat
A long narrow cut is called a slit.
Narrow deep valleys are sometimes called canyons. Or a small valley riginally worn away by running water and serving as a drainageway after prolonged heavy rains is called a Gully.
a strait is a narrow passage (found in my social studies book)