n.
Pronunciation: ˌ är-( ˌ )b ē - ' ī , ' ri-b ē
Function: noun
Inflected Form: plural RBIs or RBI
Etymology: r un b atted i noun
Date: 1948
: a run in baseball that is driven in by a batter also : official credit to a batter for driving in a run <led the league in RBI s >