marker

nouns

some conspicuous object used to distinguish or mark something
"the buoys were markers for the channel"
is derived from
is a type of (narrower)
a man-made object taken as a whole
a distinguishing symbol
"the owner's mark was on all the sheep"
is derived from
a writing implement for making a mark
is derived from
is derived from
is derived from
is a type of (narrower)
an implement that is used to write