filament lamp

13 LETTERS · STARTS WITH F

filament lamp is a valid 13-letter word worth 21 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

F4I1L1A1M3E1N1T1L1A1M3P3

4 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 3 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does filament lamp mean?