Definitions
1.nounThe act or process of falling in.
2.nounAn incursion; an inroad.
3.nounThe area where water, storm runoff, etc., enters a storm drain.
4.nounMovement towards a massive astronomical body under the influence of gravity; especially the process whereby gas falls towards a neutron star or black hole at high speed, forming a plasma
5.verbTo fall in.
6.verbTo undergo infall.