Found 2 items, similar to nightlong.
English → English (WordNet)
Definition: nightlong
nightlong
adj : lasting through or extending over the whole night;
“a
nightlong vigil”;
“an overnight trip” [syn:
overnight]
English → English (gcide)
Definition: Nightlong
Nightlong
\Night"long`\ (?; 115), a.
Lasting all night.
[1913 Webster]