noun

• Whitish froth found in compact masses on leaves and plant stems, exuded by the larvae of froghoppers.

  ‘Developing young create a frothy mass commonly known as cuckoo spit on plants in the early spring and summer to hide from predators such as ants.’

  More example sentences

  • ‘Keep an eye out for cuckoo spit, a globule of froth that conceals the tiny froghopper, easily squashed between thumb and finger.’
  • ‘While slugs will ignore it, there may be a small problem with cuckoo spit, or rather the tiny green bug that is encased in the spit.’