We don't have synonyms for serrano yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are serrato, serano and serrao.
(n) :
Ellipsis of serrano pepper, a chili pepper, a cultivar of Capsicum annuum which originated in the mountainous regions of the Mexican states of Puebla and Hidalgo and is used in cooking. [A chili pepper of species Capsicum annuum.]
(n) :
Ellipsis of serrano ham (jamón serrano), Spanish dry-cured ham from non-Iberian breeds of pig.
(n) :
Ellipsis of serrano pepper, a chili pepper, a cultivar of Capsicum annuum which originated in the mountainous regions of the Mexican states of Puebla and Hidalgo and is used in cooking. [A chili pepper of species Capsicum annuum.]
(n) :
Ellipsis of serrano ham (jamón serrano), Spanish dry-cured ham from non-Iberian breeds of pig.