drift

noun

1.
a force that moves something along
impetus impulsion
Derived from:
drift
2.
the gradual departure from an intended course due to external influences (as a ship or plane)
Derived from:
drift
3.
a process of linguistic change over a period of time
4.
a large mass of material that is heaped up by the wind or by water currents
Derived from:
drift
5.
a general tendency to change (as of opinion)
movement trend
Derived from:
drift drive
6.
the pervading meaning or tenor
purport
Derived from:
drive
7.
a horizontal (or nearly horizontal) passageway in a mine
gallery heading
Derived from:
drive