Webster’s Revised Unabridged Dictionary · 1913
Runlet
Run′let (rŭn′lĕt), n. [Run + -let.] A little run or stream; a streamlet; a brook.
To trace out to its marshy source every runlet that has cast in its tiny pitcherful with the rest. Lowell.
Run′let, n. Same as Rundlet. "A stoup of sack, or a runlet of canary." Sir W. Scott.