overgrowth

noun4

1. •
   A usually abundant, luxuriant growth over or on something else.
2. •
   A tangle of growth occurring at the top of trees involving vines and branches, common in jungles.

   • In desolate places where dank moisture breeds / The pipy Hemlock to strange overgrowth — 1818
3. •
   An excessive growth or increase in numbers, as in a population of weeds or microbes.
4. •
   Excessive size; usually caused by over-production of growth hormone from the pituitary gland.