Synonyms: marker
Definition: some conspicuous object used to distinguish or mark something
Usage: the buoys were markers for the channel
Synonyms: marker
Definition: a writing implement for making a mark
Similar words: writing implement
Definition: an implement that is used to write
Synonyms: mark, marker, marking
Definition: a distinguishing symbol
Usage: the owner's mark was on all the sheep
Similar words: symbol
Definition: an arbitrary sign (written or printed) that has acquired a conventional significance