3. perpendicular

noun. (ˌpɝːpənˈdɪkjəlɝ) An extremely steep face.
Synonyms
Etymology
perpendicular (English)

6. perpendicular

adjective. (ˌpɝːpənˈdɪkjəlɝ) Extremely steep.
Synonyms
Etymology
perpendicular (English)
Etymology
perpendicular (English)