What does the cryptic crossword clue "No charge is made, so get release (4)" mean?

This cryptic clue uses wordplay to arrive at the answer. Visit the page for progressive hints — definition, wordplay type, and a full step-by-step explanation.

No charge is made, so get release (4)

Telegraph #28427 | 9 Across | 2017-05-15 flower

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Also seen in

Guardian Cryptic #26771 (2016-01-04)