-ru Godan/u-verb

1. to reel; to wind; to spin (thread)
2. to turn (pages); to flip through (a book); to leaf through (a book); to consult (a dictionary); to refer to (an encyclopedia)
3. to count (e.g. the days)
4. to open one-by-one; to close one-by-one (e.g. shutters)