ôl yn ôl

== Welsh == === Prepositional phrase === ôl yn ôl back to back, without interruption ==== Derived terms ==== olynol (“successive”) === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “olynol”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies