How many letters does the top answer for “something placed at the center of something else (as on a table)” have?

The most common answer is centerpiece (11 letters).

Crossword clue: something placed at the center of something else (as on a table)

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

centerpiece 11 letters wn-def

something placed at the center of something else (as on a table)

centrepiece 11 letters wn-def

something placed at the center of something else (as on a table)

placed on or over something else 60% similar → overlying