1. Of flowers having a long extension at the base of the corolla

Antonym: short-spurred

• delta wing
• deltaic
• Deltasone
• deltiology
• deltoid
• deltoid eminence
• deltoid leaf
• deltoid muscle
• deltoid tuberosity
• delude
• deluge
• delusion
• delusional
• delusional disorder
• delusions of grandeur
• delusions of persecution
• delusive
• delusively
• delusory
• deluxe
• delve
• delver
• demagnetisation
• demagnetise
• demagnetization