|Location||Border between Rohan and Gondor|
|Description||East flowing stream, tributary of the Entwash|
The Mering Stream, or Glanhír in Sindarin, was the border river between Rohan and Gondor. West of the Mering Stream lay the Eastfold, and to its east lay Anórien.
The stream rose from a cleft in a northward spur of the White Mountains, traversed the Firienholt, which grew about the mountain Halifirien, last of the Warning beacons of Gondor, then exited to the plain and joined the Entwash, where it formed impassable marshes.:301
The line of the Stream was fortified between the marshes and the bridge of the Road.:301
In later times it formed the border between Gondor and Rohan, together with the White Mountains and the Mouths of the Entwash.
The name means "boundary stream". Mering represents Old English māere, mēre, "boundary". Glanhír comes from Sindarin glan, "mark, boundary" and sîr, "river, stream".
- ↑ J.R.R. Tolkien, The Lord of the Rings, The Return of the King, "Map of Rohan, Gondor, and Mordor"
- ↑ 2.0 2.1 2.2 J.R.R. Tolkien, Christopher Tolkien (ed.), Unfinished Tales, "Cirion and Eorl and the Friendship of Gondor and Rohan"
- ↑ J.R.R. Tolkien, "Nomenclature of The Lord of the Rings" in Wayne G. Hammond and Christina Scull (eds), The Lord of the Rings: A Reader's Companion, p. 773
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), Unfinished Tales, "Cirion and Eorl and the Friendship of Gondor and Rohan", note 46
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Appendix: Elements in Quenya and Sindarin Names", entry sîr