How to Say "receptacle" in Spanish
The Spanish word for “receptacle” is “hembra” — C1 level.
English → SpanishC1
nounC1technical
electrical or mechanical fitting

Examples
Necesitas alinear el macho con la hembra para cerrar la cerradura.
You need to align the male part with the female part (socket) to close the lock.
La conexión tiene una cabeza macho y una hembra.
The connection has a male head and a female head (receptacle).
Technical Gender Analogy
In technical Spanish, 'hembra' (female) is used for the part that receives or contains something, while 'macho' (male) is the part that inserts or connects.
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