What is the meaning of Accumulator?

One who, or that which, accumulates.

A wet-cell storage battery.

A collective bet on successive events, with both stake and winnings being carried forward to accumulate progressively.

A system of elastic springs for relieving the strain upon a rope, as in deep-sea dredging.

A vessel containing pressurized hot water ready for release as steam.

A container which stores hydraulic power for release, in the form of a pressurized fluid (often suspended within a larger tank of fluid under pressure).

A register or variable used for holding the intermediate results of a computation or data transfer.

A derivative contract under which the seller commits to sell shares of an underlying security at a certain strike price, which the buyer is obligated to buy.

One who takes two higher degrees simultaneously, to reduce their length of study.

A one way membership function.

battery, accumulator

one who heaps up, amasses, or hoards

second/third-person singular future passive imperative of accumulō

Source: wiktionary.org