Word Study
nightfall
WORDNET DICTIONARY
Noun nightfall has 1 sense
- nightfall(n = noun.time) crepuscle, crepuscule, dusk, evenfall, fall, gloam, gloaming, twilight - the time of day immediately following sunset; "he loved the twilight"; "they finished before the fall of night" is a part of eve, even, evening, eventide
has particulars: night
is a kind of hour, time of day
CIDE DICTIONARY
nightfall, n.
The close of the day; the arrival of the night; the period at and just after dusk. Swift. [1913 Webster]
ROGET THESAURUS
nightfall
Evening
N evening, eve, decline of day, fall of day, close of day, candlelight, candlelighting, eventide, nightfall, curfew, dusk, twilight, eleventh hour, sunset, sundown, going down of the sun, cock-shut, dewy eve, gloaming, bedtime, afternoon, postmeridian, p, m, autumn, fall, fall of the leaf, autumnal equinox, Indian summer, St. Luke's summer, St. Martin's summer, midnight, dead of night, witching hour, witching hour of night, witching time of night, winter, killing time, vespertine, autumnal, nocturnal, midnight, the outpost of advancing day, sable-vested Night, this gorgeous arch with golden worlds inlay'd.
For further exploring for "nightfall" in Webster Dictionary Online