"leaner" in the noun sense
1. leaner
horseshoes) the throw of a horseshoe so as to lean against (but not encircle) the stake
"leaner" in the adjective sense
1. thin, lean
lacking excess flesh
"you can't be too rich or too thin"
"Yon Cassius has a lean and hungry look"-Shakespeare
2. lean
lacking in mineral content or combustible material
"lean ore"
"lean fuel"
3. lean, skimpy
containing little excess
"a lean budget"
"a skimpy allowance"
4. lean
not profitable or prosperous
"a lean year"
Source: WordNet® (An amazing lexical database of English)
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