What does the cryptic crossword clue "Bowl over in test underarm (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.

Bowl over in test underarm (4)

Telegraph #29666 | 20 Across | 2021-05-04 flower

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Telegraph Prize Cryptic #3283 (2024-09-22)