Uber driver's guess (3)
I believe the answer is:
eta
(Other definitions for eta that I've seen before include "when it might reach us?" , "Seventh Greek letter" , "Letter from abroad" , "Member of Greek set a" , "When one is due" .)
I believe the answer is:
eta
(Other definitions for eta that I've seen before include "when it might reach us?" , "Seventh Greek letter" , "Letter from abroad" , "Member of Greek set a" , "When one is due" .)