rootsign
nounUK /ˈruːt saɪn/
US /ˈruːt saɪn/
A rootsign is a special mark that shows where a plant's roots begin.
The gardener painted a rootsign on the pot so the new helper would know which side goes down.
OTHER MEANINGS
2. A symbol used in math to show a square root or other root.
The teacher wrote a rootsign over the number sixteen on the board.
3. A sign or clue that points to the origin or cause of something.
The old letter was a rootsign that helped them find their family's first home.
4. A mark on a map that shows where a trail or river starts.
The hikers looked for the rootsign at the beginning of the forest path.