How many letters does the top answer for “a piece of mechanism; mechanical device or contrivance; a gimcrack. bp. hall. shak.” have?

The most common answer is gimmer (6 letters).

Crossword clue: a piece of mechanism; mechanical device or contrivance; a gimcrack. bp. hall. shak.

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

gimmer 6 letters web-def

A piece of mechanism; mechanical device or contrivance; a gimcrack. [Obs.] Bp. Hall. Shak.

gimmor 6 letters web-def

A piece of mechanism; mechanical device or contrivance; a gimcrack. [Obs.] Bp. Hall. Shak.