Here are the possible solutions for old single clue
Answer
Clue
Relevancy
onehitnders
Clue
They make you remember a single single
alice
Clue
Old sitcom about a single mom working at a Phoenix diner
cel
Clue
Single frame from an old Disney movie
Single frame from an old Disney cartoon
Definition
(short for) celluloid, a celluloid frame of an animated cartoon
etaoin
Clue
"___ shrdlu" (nonsense phrase of old type-setting lore which has an interesting backstory but I can't do it justice in the space of a single clue even a long one like this so yeah it's just kind of a