Zángano is Spanish for drone (as in the
asexual, genetically identical organisms that form the majority of a bee colony). In some regional dailects, it is used as a term of contempt for a useless,
lazy person; in this context the use may be extended to that of a general, mild slur in the sense of schmuck or
dumbass.
Slang usaage:
"
Sara es como mi hermana, pero su novio es un zángano."
<>
"
Sara's like a sister to me, but her boyfriend's a zángano."
...
"Zángano!" (contemptiously spoken to someone you find worthless)