two-base hit two·ba·se·hit uncommon noun 1. a base hit on which the batter stops safely at second base “he hit a double to deep centerfield” Synonymsdoubletwo-base hittwo-baggertwo-baser Related words Word family double Broader terms base hit Narrower terms line-drive double WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.