gravy

noun 0.675

milk train

noun 0.645

gravy boat

noun 0.626

freight train

noun 0.612

goods train

noun 0.571

work train

noun 0.568

railway train

noun 0.554

down train

noun 0.542

free lunch

noun 0.532

ghost train

noun 0.531

passenger train

noun 0.529

golden goose

noun 0.528

ticket to ride

noun 0.528

railroad

noun 0.521

trainload

noun 0.520

easy street

noun 0.516

slow train

noun 0.514

money machine

noun 0.514

free pass

noun 0.513

gold rush

noun 0.512

railway

noun 0.508

grace and favour

noun 0.506

cash cow

noun 0.503