A small steel mortar used for pulverizing hard substances.

Geopelia cuneata, a bird resident in Australia.

Stagonopleura guttata, an estrildid finch endemic to Australia.

An uncut diamond. / (figuratively) A person whose goodness or other positive qualities are hidden by a harsh or unremarkable surface appearance.

A four-cornered part of a baseball field in which the corners are the three bases and the home plate.

plural of diamond cutter

Used other than figuratively or idiomatically: see diamond, ring. / By extension, an engagement ring, usually one given by a man to a woman.

(geology, mineralogy) A form of quartz crystal found within geodes of the Avon Gorge.

plural of diamond bracket

(computing) Synonym of angle bracket