Used other than figuratively or idiomatically: see brick, wall. A wall made of bricks. / (figuratively) An obstacle. / (sound engineering) A type of anti-aliasing filter with a steep cutoff.

plural of onagga

(astronomy) Lambda Scorpii, a triple star system and the second-brightest object in the constellation of Scorpius.

Poor-quality diamond, used for industrial cutting or abrasion; a poorly crystallized diamond.