Quince

11 clues
Fruit
Jelly fruit
Pear resembler
Preserves fruit
Pear look-alike
Marmalade fruit
Pear-shaped fruit
It might be in a jam
Apple or pear relative
Cinque (anag) — fruit
The Owl and the Pussycat" dinner fare
Similar answers:
Abalance
Abelgance
Aberrance
Abeyance
Abeyances
Abhorrence
Abidance
Abillinequity
Aboutonceaweek
Abovereferenced
Absence
Absenceof
Absenceofalice
Absenceofmalice
Absenceofmallets
Absenceofmind
Absenceofmotion
Absences
Absolutesilence
Abstinence