logrolling

noun6

1. •
   (US) The rolling of logs from one place to another; an occasion when people meet to help each other roll logs.
2. •
   (US, figurative) A concerted effort to push forward mutually advantageous legislative agendas by combining two items, either or both of which might fail on its own, into a single bill that is more likely to pass.
3. •
   (figurative) Mutual recommendation of friends' or colleagues' services or products, such as book recommendations in literary reviews.

   • I’ve been on holiday, and my son read a book I liked, so here’s an idle bit of logrolling which might be of interest. — 2015
4. •
   (figurative) The exchanging of favors.
5. •
   (US) The act of balancing on a log floating on a river to guide it downstream, often involving rolling it using one's feet; birling.
6. •
   (US) A sport in which two people balance on a log floating in a body of water, each one aiming to cause the opponent to fall off by rolling or kicking the log.