2The blue-breasted cordon-bleu, Uraeginthus angolensis (family Estrildidae), a waxbill with a pale blue face and underparts, common in southern Africa.
Origin
Late 18th century.
Definition of blue-breast in US English:
blue-breast
noun
1The bluethroat, Luscinia svecica (now rare).
2The blue-breasted cordon-bleu, Uraeginthus angolensis (family Estrildidae), a waxbill with a pale blue face and underparts, common in southern Africa.