Answer: trows

AnswerCrossword Clue
TROWSThinks way back?
TROWSBritish barges.
TROWSSupposes: Archaic.
TROWSThinks, archaically.
TROWSBelieves, old style
TROWSBelieves, of yore
trowsbelieve
trowsTROW, to suppose (to assume to be true)
trowsink