struth

I

a stream, Irish, Old Irish sruth, g. srotha, Welsh ffrwd, Cornish frot, alveus, Breton froud: *srutu-, root sreu, flow; Greek $$Gr$$`úsis, a flowing, $$Gr$$`eu$$nma, a stream, $$Gr$$`éw, flow; English stream, Norse straumr; Lithuanian sravju, flow. Some have referred the Celtic words to the root spreut, spreu, to well, German sprudel, a well, sprühen, emit sparks, drizzle, further English spurt, spout.

II

ostrich, Irish struth; from Latin struthio, whence, through Old French ostruche (= avis struthio), English ostrich.