gloaming(n = noun.time) crepuscle, crepuscule, dusk, evenfall, fall, gloam, nightfall, twilight - the time of day immediately following sunset; "he loved the twilight"; "they finished before the fall of night"
is a kind of hour, time of day
is a part of eve, even, evening, eventide
has particulars: night

1.  Twilight; dusk; the fall of the evening. Hogg. [1913 Webster]

2.  Sullenness; melancholy. J. Still. [1913 Webster]

gloaming, n. poet. twilight; dusk.

Etymology:
OE glomung f. glom twilight, rel. to GLOW

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.