The clue "Old vacuum tube" last appeared in the New York Times crossword on October 14, 2018. The correct answer for this puzzle is "TRIODE", a 6-letter word.
Solution TRIODE is 6 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is TRIODE with 6 letters, and the shortest is TRIODE with 6 letters.
No, "OLD VACUUM TUBE" hasn´t seen a spike right now. Solvers are most interested in: Express sorrow, Dormant, Lose one's cool, church officer and NYC gallery.
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The solution is 6 letters long.