telegraph insulator

19 LETTERS · STARTS WITH T

telegraph insulator is a valid 19-letter word worth 24 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1E1L1E1G2R1A1P3H4I1N1S1U1L1A1T1O1R1

1 + 1 + 1 + 1 + 2 + 1 + 1 + 3 + 4 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does telegraph insulator mean?