par ‧ a ‧ pet /ˈpærəpət, ˈpærəpɪt, -pet/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Italian ; Origin: parapetto , from parare 'to protect' + petto 'chest' ]
1 . a low wall at the edge of a high roof, bridge etc
2 . a protective wall of earth or stone built in front of a ↑ trench in a war
3 . put/stick your head above the parapet British English to take a risk