rill also rille 
(rĭl)
(rĭl)n.
1. A small brook; a rivulet.
2. Variant of rille.
[Low German rille or Dutch ril, running stream; see rei- in the Appendix of Indo-European roots.]
- unintentionally
- uninterest
- uninterested
- uninterestedly
- uninteresting
- uninterestingly
- uninucleate
- uninvited
- uninviting
- uninvitingly
- uninvolved
- union
- Union
- union catalog
- union church
- unionism
- unionist
- unionistic
- unionization
- unionize
- unionizer
- union jack
- union label
- Union of Soviet Socialist Republics
- union shop