noun, feminine/miˈxiʝa/plural: mijillas
a little bit, a tiny amount, a smidge (almost always used in the singular with the indefinite article una)
“Ponme una mijilla más de pan, por favor.” — Give me a little bit more bread, please.
Synonyms: un poco, poquito, pizca
Diminutive of mija (a colloquial phonetic variant of miga (“crumb”) or miaja), using the diminutive suffix -illa.