noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   the technique of removing eggs from the nest of one species of bird, to be incubated in the nest of another. Usually done to aid the recovery of endangered species. uncountable

Verb

1. 1
   present participle and gerund of cross-foster form-of, gerund, participle, present

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.