
1) Mexican cuisine 2) River in Aragon 3) River in The New World 4) River in Chile 5) River in The Americas 6) River of South America 7) River of Chile 8) River in South America 9) River of The Americas 10) Slang for heroin
Found on
https://www.crosswordclues.com/clue/piedra

Piedra (also known as `Trichosporosis`{rp|312}) is a hair disease caused by a fungus. Types include: ...
Found on
http://en.wikipedia.org/wiki/Piedra

Either of two diseases resulting from fungal infection of the hair shafts. Black piedra occurs mainly in and on the hairs of the scalp and is caused by piedraia hortae; white piedra occurs in and on the hairs of the scalp, beard, moustache and genital areas and is caused by trichosporon beigelii. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973

(pya´drә) a fungal disease of the hair in which white or black nodules of fungi form on the shafts.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: pē-ā′dră Definitions: 1. A fungus disease of the hair characterized by the formation of numerous waxy, small, firm, nodular masses on the hair shaft.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=68910

Piedra is slang for heroin.
Found on
http://www.probertencyclopaedia.com/browse/ZP.HTM
No exact match found.