How many letters does the top answer for “a pear tree. chaucer.” have?

The most common answer is pirie (5 letters).

Crossword clue: a pear tree. chaucer.

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

pirie 5 letters web-def

A pear tree. [Written also pery, pyrie.] [Obs.] Chaucer.

a kind of pear. chaucer. 50% similar → perjenet

the cornel tree. chaucer. 50% similar → whippletree

the dogwood tree. chaucer. 50% similar → gaitre, gaytre