One who buckles something.

(transitive, obsolete) To shield; to defend.

plural of buckler

present participle of buckler

simple past tense and past participle of buckler

A surname.

(nautical) a cover over a hawsehole, used to keep spray out of the chain locker and prevent deckhands from stepping into the hawsehole.

plural of buckler plate

Certain species of the fern genera Dryopteris, Polystichum, and others.

(baseball, slang) A curveball (or occasionally a knuckleball) that fools the hitter, causing his or her knees to buckle (i.e. bend).