1. slope; incline; hill
2. milestone; (age) marke.g. 60の坂
Wikipedia definition
3. Grade (slope)The grade (also called slope, incline, gradient, pitch or rise) of a physical feature, topographic landform or constructed element, refers to the amount of inclination of that surface to the horizontal. It is a special case of the gradient in calculus where zero indicates gravitational level. A larger number indicates higher or steeper degree of "tilt".
Read “Grade (slope)” on English Wikipedia
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Other forms
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