(usually of a decision) Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random. / Determined by impulse rather than reason; heavy-handed.

Anything arbitrary, such as an arithmetical value or a fee.

Understood by only a few. / (by extension) Obscure, mysterious. / Requiring secret or mysterious knowledge to understand. / Extremely old (e.g. interpretation or knowledge), and possibly irrelevant.

A shady sitting place or pergola usually in a park or garden, surrounded by climbing shrubs, vines or other vegetation. / A grove of trees.

An axis or shaft supporting a rotating part on a lathe. / A bar for supporting cutting tools. / A spindle of a wheel.

(history) The son or male-line grandson of an emperor of the Austro-Hungarian Empire. / (history) The ruler of an archduchy, in particular the Archduchy of Austria.

A regional unit of Greece in the central and southeastern Peloponnese. Tripoli is the capital and main city with a population over 47,000.

(figuratively) An ideal region of rural and idyllic contentment; a pastoral utopia.

A powerful angel that leads many other angels, but is still loyal to a deity, and often seen as belonging to a particular archangelical rank or order within a greater hierarchy of angels. (Judeo-Christian examples: Gabriel, Michael, Raphael, Uriel).

(arithmetic) Any of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 used to represent numbers.