From The Collaborative International Dictionary of English v.0.48:
Lilt \Lilt\ (l[i^]lt), v. i. [Cf. Norw. lilla, lirla, to sing in a high tone.] 1. To do anything with animation and quickness, as to skip, fly, or hop. [Prov. Eng.] --Wordsworth. [1913 Webster]
2. To sing cheerfully. [Scot.] [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Lilt \Lilt\, v. t. To utter with spirit, animation, or gayety; to sing with spirit and liveliness. [1913 Webster]
A classic lecture, rich in sentiment, With scraps of thundrous epic lilted out By violet-hooded doctors. --Tennyson. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Lilt \Lilt\, n. 1. Animated, brisk motion; spirited rhythm; sprightliness. [1913 Webster]
The movement, the lilt, and the subtle charm of the verse. --F. Harrison. [1913 Webster]
2. A lively song or dance; a cheerful tune. [1913 Webster]
The housewife went about her work, or spun at her wheel, with a lilt upon her lips. --J. C. Shairp. [1913 Webster]