lean

lean

1. (of a mixture of fuel and air) containing insufficient fuel and too much air

2. (of concrete) made with a small amount of cement

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Lean

Sir David. 1908--91, English film director. His films include In Which We Serve (1942), Blithe Spirit (1945), Brief Encounter (1946), Great Expectations (1946), Oliver Twist (1948), The Bridge on the River Kwai (1957), Lawrence of Arabia (1962), Dr Zhivago (1965), and A Passage to India (1984)

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lean [lēn]

(materials)

Of concrete or mortar, containing little or insufficient cement.

Of clay, deficient in plasticity.

Of coal, having little or no volatile matter.

Of lime, containing impurities.

Of fuel mixture, expecially for internal combustion engines, being low in combustible component.

Of ore, being low-grade.

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Lean - An experimental language from the University of Nijmegen and University of East Anglia, based on graph rewriting and useful as an intermediate language. Lean is descended from Dactl0. Clean is a subset of Lean. ["Towards an Intermediate Language Based on Graph Rewriting", H.P. Barendregt et al in PARLE: Parallel Architectures and Languages Europe, G. Goos ed, LNCS 259, Springer 1987, pp.159-175].