1 : almost straight up and down : rising or falling very sharply a steep slope/hillside The stairs are very steep.

Is steep high or low?

adjective, steep·er, steep·est. having an almost vertical slope or pitch, or a relatively high gradient, as a hill, an ascent, stairs, etc. (of a price or amount) unduly high; exorbitant: Those prices are too steep for me.

What does it mean by steep slope?

Figure 1: Example of a 15% slope. Steep slopes have a ≥15 ft vertical rise over a. 100 ft horizontal run, or a 15% slope. FACT SHEET: 12. Steep Slopes.