amontonar

verb
  1. To pile up or accumulate objects or items into a heap or mass. verb
    She began to amontonar the books on the table until they formed a tall stack.
    The children loved to amontonar leaves in the yard during autumn.
  2. To gather or collect a large quantity of something, often in a disorganized manner. verb
    Over the years, he managed to amontonar a vast collection of stamps.
    The garage was used to amontonar old furniture and broken appliances.