Found 14 symbols starting with RI:

Rì chū (simplified)
Chinese characters representing "Rì chū", which translates as 'Sunrise'.
Rice
Rice
Rifle
Rifle
Right Angle
Specifies that an angle is 90 degrees.
Right Bend Ahead
Right bend ahead sign - U.K.
Right Open Interval
A range of values between the listed values including the left value but not the right value.
Right Triangle
Specifies that a triangle is a right triangle (i.e., has an angle that is 90 degrees)
Rìluò
Chinese characters representing "Rìluò", which translates as 'Sunset'.
Ringstone
The ringstone symbol was designed by `Abdu'l-Bahá, Bahá'u'lláh's son and successor, and as its name implies, is the most common symbol found on rings worn by Bahá'ís, but it is also used on necklaces…
Rio Majes
A carving from the valley of Rio Majes in southern Peru (roughly 300 B.C.E.). Possibly indicates a house, but no contextual information known at this time.
Rio Majes #2
A carving from the valley of Rio Majes in southern Peru (roughly 300 C.E.). Possibly indicates lightning, but no contextual information known at this time.
Rio Majes #3
A carving from the valley of Rio Majes in southern Peru (roughly 300 C.E.). No contextual information known at this time.
Rising Badge
One of eight signature items found in the second generation of the Pokémon franchise.
River Dragon egg
Icon used to indicate a River Dragon egg in the game DragonVale.