What is "sparrow-weaver"

The sparrow-weavers, Plocepasser, are a genus of birds. It is classified in the family Passeridae (sparrows), or sometimes in the family Ploceidae (weavers). It contains the following species:

• Donaldson Smith's sparrow-weaver (Plocepasser donaldsoni)
• Chestnut-backed sparrow-weaver (Plocepasser rufoscapulatus)
• Chestnut-crowned sparrow-weaver (Plocepasser superciliosus)
• White-browed sparrow-weaver (Plocepasser mahali)