Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
straggle [ˈstrægl] vi (houses etc) раски́дываться (раски́нуться perf) (people) разбреда́ться (разбрести́сь*perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.