n.1 (often foll. by to) a disposition or propensity.
2 (often foll. by for) a liking or affection.
3 a leaning, slope, or slant.
4 the difference of direction of two lines or planes, esp. as measured by the angle between them.
5 the dip of a magnetic needle.
Etymology: ME f. OF inclination or L inclinatio (as INCLINE)