 Goths are believed to have reached the western shores of the Black Sea between the Danube and Dniester Rivers (an area covered by present-day Ukraine and Romania) about 230 CE, so contact between them and Proto-Slavic speakers might have started in the preceding century.Contact between these two groups continued all the way to the early historical period.It is believed that the Gothic language was the intermediary for the entry of many terms of Greco-Roman cultural provenience into Proto-Slavic, for example

Here is a list of words which are generally held to be Germanic loanwords in Proto-Slavic