nail down

"No-one has been able to nail down who exactly has benefited. It’s almost like a beer parlour gossip about who is getting what," says Toyin Akinosho of the Africa Oil+Gas Report.

I nailed down the fastest, safest route home from my job in Westwood.

“Right now the U.S. consumer is buying everything that isn’t nailed down,” said Rupkey.

So perhaps expecting it to be nailed down for 90 minutes just three games in is just not realistic.

It can take a while to get through the process and nail down a contractor — who may have trouble getting supplies, causing further delays.