marker

"We know people get quite excited about the festive adverts. It's a marker in people's years and has become part of that Christmas countdown."

These samples were then genetically tested using a species-specific marker called a DNA barcode.

For decades, the California State University system focused on graduation rates as the top marker of student success, in line with most of its fellow higher education institutions.

The showdown between two of Europe's biggest football nations can be a marker of where the Lionesses must improve before the summer.

There wasn’t even an enduring marker for the birth and death dates.