"on fire," early 15c., apparently from Middle English aliht, past participle of alihton (Old English on-lihtan) "to light up," also "to shine upon" (see light (n.)).

"to descend, dismount," Old English alihtan, originally "to lighten, take off, take away," from a- "down, aside" (see a- (1)) + lihtan "get off, make light" (se [..]

ablaze(p): lighted up by or as by fire or flame; "forests set ablaze (or afire) by lightning"; "even the car's tires were aflame"; & [..]

in flames; burning

(v) come down(adj) lighted up by or as by fire or flame(v) to come to rest, settle

— To get off a transit vehicle. Plural: “alightings”.

1. To spring down, get down, or descend, as from on horseback or from a carriage; to dismount. 2. To descend and settle, lodge, rest, or stop; as, a flying bird alights on a tree; snow alights on a roof. 3. To come or chance (upon). Origin: OE. Alihten, fr. AS. Alihtan; pref. A- (cf. Goth. Us-, G. Er-, orig. Meaning out) + lihtan, to alight, orig. [..]

To get off a transit vehicle (also called deboarding). Plural noun: “alightings”. Allocation: An administrative distribution of funds (for example, federal funds among the states).  Used for funds that do not have legislatively mandated distribution formula.

(transitive) To make light or less heavy; lighten; alleviate.