Word of the day: runnel

The word of the day is runnel:

1. a small stream; brook; rivulet.
2. a small channel, as for water.

"rivulet," 1577, in Hakluyt, from O.E. rinelle, a dim. form related to rinnan "to run" (see run (v.)).

(http://dictionary.reference.com/browse/runnel)

"Dribbling down some of the tree trunks were little runnels that looked like dried sap.  On a previous visit to the Amazon I had seen runnels just like these on a rubber tree in an abandoned plantation.  Thinking it was a drip of latex sap, I plucked at one."

 - Charles Mann, 1491: New Revelations of the Americas Before Columbus