epicyclic gear train

NOUN
20 LETTERS · STARTS WITH E

epicyclic gear train is a valid 20-letter word worth 30 points in Scrabble and 36 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1P3I1C3Y4C3L1I1C3G2E1A1R1T1R1A1I1N1
1 + 3 + 1 + 3 + 4 + 3 + 1 + 1 + 3 + 0 + 2 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does epicyclic gear train mean?

NOUN · 1 SENSE
1

A system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axis.