Letters that make ERA
a, e, r are letters that make 'ERA'
Tera, Kera, eras, sera, vera, Hera are words created by adding a letter to 'ERA'
1 possible definitions for 'ERA'
Under this definition, era is a noun and has the following properties:
earned run average has the same meaning as ERA
'ERA' can be a type of standard, criterion, measure, touchstone.
'ERA' can be a category of baseball, baseball game.