costra

Inherited from Latin crusta (following metathesis), from Proto-Indo-European *krustós (“hardened”), from *krews- (“to form a crust, begin to freeze”). Cognate with English crust. Also, compare English custard, an English descendant of Latin crusta that also underwent similar metathesis.

• IPA^(key): /ˈkostɾa/ [ˈkos.t̪ɾa]
• Rhymes: -ostɾa
• Syllabification: cos‧tra

costra f (plural costras)

1. crust
2. scab

   Synonym: postilla

3. snot

   Synonym: moco

• “costra”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10