This is the 5483rd most frequent Spanish word.
oídos
Inner ears or the sense of hearing.
Here, 'oídos' refers physically to the organs of hearing, indicating a health issue in the context of swimming.
Me duele uno de los oídos después de nadar en agua fría.
One of my ears hurts after swimming in cold water.
Here, 'oídos' metaphorically represents the act of receiving pleasing information through hearing.
Las palabras de amor siempre son música para mis oídos.
Words of love are always music to my ears.
In this case, 'oído' is singular and refers to the ability to discern sounds effectively.