DictionaryRoot: mearcian
Old English
mearcian
to mark, trace boundaries
2 / 3

noun
marker
MAR-ker/ˈmɑːrkər/
Something used to create or display an identifying sign.
Etymology
A marker is something that marks: it makes a position or boundary identifiable. This preserves the old boundary-sign idea in mark; the modern noun may be a separate formation from the early word for a writer.