coupling circuit

16 LETTERS · STARTS WITH C

coupling circuit is a valid 16-letter word worth 24 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3O1U1P3L1I1N1G2C3I1R1C3U1I1T1

3 + 1 + 1 + 3 + 1 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 3 + 1 + 1 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does coupling circuit mean?