Meaning of 了う in Japanese

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Definition of 了う

しまう(shimau) 【仕舞う ·終う ·了う ·蔵う】

(v5u, vt) to finish; to stop; to end; to put an end to; to bring to a close
やってしまったことは元に戻らない。
What is done cannot be undone.
to close (a business, etc.); to close down; to shut down; to shut up
to put away; to put back; to keep; to store
(aux-v, v5u) to finish ...; to do ... completely