Definition of "cortado"

We ordered a couple of shots and a couple of cortados and sat by the narrow, unglazed arch that overlooked the reservoir. 'To Yvan,' he declared, and I raised my aguardiente to his, chinking glasses to the insincere memory of [Yvan].

2009, Chris Haslam, Twelve-Step Fandango, Zondervan, page 93

" […] and a couple of espressos. Make the lady's a cortado, you know, the way you add just a touch of steamed milk."

2021, Florencia Mallon, Beyond the Ties of Blood, Simon and Schuster