noun
marker
MAH-kuh
noun
1
A felt-tipped pen used for writing or drawing in bold, solid lines.
"She wrote the heading in thick black marker."
2
An object used to indicate a position, boundary, or point of reference.
"A wooden marker showed where the trail split."
"Runners passed the halfway marker at the ten-kilometre mark."
3
A sign or indicator that something is true or likely.
"High blood pressure can be a marker for heart disease."
How to Use Marker
Learner’s notesIn plain EnglishA pen for bold writing, a physical sign showing a location, or a sign that indicates something else is true.
Common pairings
a permanent marker
a trail marker
a marker for disease
Word Forms
markered past tense, markers singular
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She wrote the heading in thick black _____.
Etymology
From "mark" plus the agent suffix "-er" — literally "something (or someone) that marks."