How many letters does the top answer for “(of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm” have?

The most common answer is botonee (7 letters).

Crossword clue: (of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm

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

botonee 7 letters wn-def

(of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm

botonnee 8 letters wn-def

(of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm