'High and low' definitions:

Definition of 'high and low'

From: WordNet
adverb
Everywhere; "searched high and low"

Definition of 'High and low'

From: GCIDE
  • High \High\, adv. In a high manner; in a high place; to a great altitude; to a great degree; largely; in a superior manner; eminently; powerfully. "And reasoned high." --Milton. "I can not reach so high." --Shak. [1913 Webster]
  • Note: High is extensively used in the formation of compound words, most of which are of very obvious signification; as, high-aimed, high-arched, high-aspiring, high-bearing, high-boasting, high-browed, high-crested, high-crowned, high-designing, high-engendered, high-feeding, high-flaming, high-flavored, high-gazing, high-heaped, high-heeled, high-priced, high-reared, high-resolved, high-rigged, high-seated, high-shouldered, high-soaring, high-towering, high-voiced, and the like. [1913 Webster]
  • High and low, everywhere; in all supposable places; as, I hunted high and low. [Colloq.] [1913 Webster]