Rory "ai" and "oi"

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Across
  1. 3. this has a "heads" and a "tails"
  2. 5. when food goes bad
  3. 7. this part of a cat helps it balance
Down
  1. 1. what farm animals eat
  2. 2. when water is really hot and bubbles
  3. 4. to be in a club or on a sports team
  4. 5. part of a boat that catches the wind
  5. 6. made from links of metal