What is to effect a lodgment upon, as upon the crest of the glacis, or the summit of the breach. To crown a knot (Naut.), to lay the ends of the strands over and under each other called?

crown — (Mil.) To effect a lodgment upon, as upon the crest of the glacis, or the summit of the breach. To crown a knot (Naut.), to lay the ends of the strands over and under each other. (Webster's 1913.)