ridge

noun
1
a narrow area of high land along the top of a line of hills; a high pointed area near the top of a mountain
خط‌الرأس, یال
2
a raised line on the surface of something; the point where two sloping surfaces join
خط‌الراس, یال, رشته
The ridges on the soles of my boots stopped me from slipping.
the ridge of the roof
3
a long narrow area of high pressure in the atmosphere
خط‌الرأس, رشته‌فشار, پشته طولی, نوار بلند فشار
a ridge of high pressure over the Atlantic
compare trough
verb
1
to make narrow raised lines or areas on the surface of something
شیاردار کردن, برآمدگی ایجاد کردن