Webster's Revised Unabridged Dictionary · 1913

Lull

Lull (lul) , transitive verb

[Akin to OD. lullen to sing to sleep, German lullen, Danish lulle, Swedish lulla; all of imitative origin. Compare Loll, Lollard.]

To cause to rest by soothing influences; to compose; to calm; to soothe; to quiet.
To lull him soft asleep. — Spenser
Such sweet compulsion doth in music lie, To lull the daughters of necessity. — Milton

Lull , intransitive verb

To become gradually calm; to subside; to cease or abate for a time; as, the storm lulls.

Lull , noun

1.
The power or quality of soothing; that which soothes; a lullaby. [Rare] — Young
2.
A temporary cessation of storm or confusion.