Definition of "rooting"

rooting

noun
countable and uncountable, plural rootings
1. A system of roots; a secure attachment (in something); a firm grounding.
  Quotations
  as sone as the sun was uppe it caught heet: and because it had nott rotynge it wyddred awaye.
  1526, [William Tyndale, transl.], The Newe Testamẽt […] (Tyndale Bible), [Worms, Germany: Peter Schöffer], Mark ]
2. The process of forming roots or taking roots.
3. A method of creating a new plant by getting part of an existing plant to form roots.
4. A hole formed by a pig when it roots in the ground.
  Quotations
  1968, Gary Douglas E. Joll, Big game hunting in New Zealand, page 209
5. The reflex a baby makes when hungry and seeking milk.
verb
1. present participle and gerund of root