How many letters does the top answer for “blockage consisting of an object designed to fill a hole tightly” have?

The most common answer is plug (4 letters).

Crossword clue: blockage consisting of an object designed to fill a hole tightly

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

plug 4 letters wn-def

blockage consisting of an object designed to fill a hole tightly

stopper 7 letters wn-def

blockage consisting of an object designed to fill a hole tightly

stopple 7 letters wn-def

blockage consisting of an object designed to fill a hole tightly