'Livelong' definitions:

Definition of 'livelong'

From: WordNet
adjective
(of time) constituting the full extent or duration; "all the livelong day"
noun
Perennial northern temperate plant with toothed leaves and heads of small purplish-white flowers [syn: orpine, orpin, livelong, live-forever, Sedum telephium]

Definition of 'Livelong'

From: GCIDE
  • Livelong \Live"long`\, a. [For lifelong. Cf. Lifelong.]
  • 1. Whole; entire; long in passing; -- used of time, as day or night, in adverbial phrases, and usually with a sense of tediousness. [1913 Webster]
  • The obscure bird Clamored the livelong night. --Shak. [1913 Webster]
  • How could she sit the livelong day, Yet never ask us once to play? --Swift. [1913 Webster]
  • 2. Lasting; durable. [Obs.] [1913 Webster]
  • Thou hast built thyself a livelong monument. --Milton. [1913 Webster]