Iach

iach is a noun meaning "ford" or "crossing" in Sindarin. Compare with yatta in Quenya.

Examples:

• Arossiach = "Ford of Aros"
• Cirith Ninniach = "Pass of the Slender Crossing"

References

• The Languages of Tolkien's Middle-earth by Ruth S. Noel
• Hiswelókë's Sindarin Dictionary compiled by Didier Willis