quid pro quo /kwid prō kwō/

1. Something given or taken as equivalent to another, often as retaliation or in return for a previous favour
2. The action or fact of giving or receiving thus

• crowbar
• crowbars
• crowberries
• crowberry
• crow-bill
• crow boot
• crow boots
• crowd
• crowded
• crowdedness
• crowder
• crowders
• crowdfunding
• crowdie
• crowdies
• crowding
• crowd out
• crowd-pleaser
• crowd-pleasers
• crowd-puller
• crowd-pullers
• crowds
• crowd sail
• crowdsource
• crowdsourced