regular icosahedron

NOUN
19 LETTERS · STARTS WITH R

regular icosahedron is a valid 19-letter word worth 25 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
R1E1G2U1L1A1R1I1C3O1S1A1H4E1D2R1O1N1
1 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 1 + 3 + 1 + 1 + 1 + 4 + 1 + 2 + 1 + 1 + 1 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does regular icosahedron mean?

NOUN · 1 SENSE