1Southwest : a steep curved descending road or trail
2: a broad alluvial slope extending from the base of a mountain range out into a basin and formed by coalescence of separate alluvial fans
First Known Use of bajada
1866, in the meaning defined at sense 1
History and Etymology for bajada
Spanish bajada slope, descent, from feminine of bajado, past participle of bajar to descend, from (assumed) Vulgar Latin bassiare, from Late Latin bassus fat, short, low