hoarder
nounmasculine/ɐkumuˈladoɾ/medium
a·cu·mu·la·dor
Definitions
1A person who accumulates things, often excessively or compulsively.
He is a hoarder of old electronics.
Hoarding disorder is a recognized mental health condition.
Common collocations
compulsive hoarderhoarding disorder
2A device that stores energy, usually electrical, for later use (e.g., a battery).
The solar system uses an accumulator to store power.
The car's accumulator needs replacing.
Common collocations
energy accumulatorlead-acid accumulator
Etymology
Do latim 'accumulator', de 'accumulare' (acumular).