"Wert corner" is a phrase commonly used in British English to describe a street corner that is considered unsafe or undesirable. While it may seem like an odd spelling, the pronunciation is the same as "worth corner," as represented by the IPA phonetic transcription [wɜrθ ˈkɔːnə]. The use of "wert" instead of "worth" is likely a regional or dialectical variation, and it is important to keep in mind that spelling can differ among English speaking countries and regions.