Related Clues:

• Attacked, as a project, with "into"
• Jackknifed, e.g.
• Columbiform bird
• Peacenik's animal
• White bird
• Did a jackknife
• Symbol of peace and forgiveness
• Bird with an olive branch
• Jumped right in
• Went headlong
• Messenger of Noah
• Antiwar advocate
• Pigeon cousin
• Went off the board
• Chocolate brand