/ Dictionary / Index C close helmet: Meaning and Definition of Find definitions for: close' hel"met Pronunciation: (klōz), [key] — Armor. Armor. a completely closed helmet of the late 15th century and after, having a facial defense composed of a visor and beaver or of a visor, ventail, and beaver attached to a pivot on each side. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. close-hauled close-in Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language