FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

layil lah'-yil — or (Isa. 21:11) leyl {lale}; also laylah {lah'- yel-aw}; from the same as 3883; properly, a twist (away of the light), i.e. night; figuratively, adversity:--((mid-))night (season).

see HEBREW for 03883