thk u both - sadly i have no other letters to help, so was undecided which way round it could be! will go with straw and see how that helps - only two left to solve, both affected by this answer!
Generally there can be no doubt which way the answer will run.
As this is a down clue the word play is upwards/raised . Were it an across clue the indicator would be something like 'return,back reversed'etc.
The definition in this particular example is a hollow tube and the word play is 'raised'