shell out

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shell out ‎(third-person singular simple present shells out, present participle shelling out, simple past and past participle shelled out)

  1. (idiomatic) To pay money, to disburse ; especially, to pay a great deal of money.
    Do you think we should shell out for the extra options package?
  2. (computing, chiefly Unix) To use a program's "shell escape" function to execute an unrelated command or to invoke a subsidiary, interactive shell.