A suburb in the borough of Bromley, Greater London, England (OS grid ref TQ3670).

A name or surname given to a person held in slavery, or passed down to their descendants.

(Canada, US) The act of performing quick mathematics often as a means of estimation, as if done on the back of a napkin (or in one's head).

plural of non-stop

(fluid mechanics, meteorology) A dimensionless number expressing the ratio of buoyancy to flow shear in a fluid flow.

A coloured quartz mineral gemstone, serpentine; it is not a normal jade mineral, being neither nephrite nor jadeite. / A gem or some other artifact composed of such material.

(typography slang) Alternative form of en dash

the number of particles per unit volume

To not take any action; to fail to do or accomplish something.

plural of non-renewable