A slope.
"The hikers struggled up the steep incline to reach the summit before sunset."
bend or turn (one's ear) towards a speaker in order to listen well
"He inclined his ear to the wise old man"
lower or bend (the head or upper body), as in a nod or bow
"She inclined her head to the student"
feel favorably disposed or willing
"She inclines to the view that people should be allowed to expres their religious beliefs"
To bend or move (something) out of a given plane or direction, often the horizontal or vertical.
"The heavy wind forced me to incline my head back to avoid getting soaked by the rain."