Mid 17th century. From over- + lean early 19th century; earliest use found in Thomas Hood (1799–1845), poet and humorist. From over- + lean. Compare to lean over.
Definition of overlean in US English:
overlean
adjectiveˌəʊvəˈliːn
Excessively lean.
verbˌəʊvəˈliːn
with objectTo lean over.
Origin
Mid 17th century. From over- + lean<br>early 19th century; earliest use found in Thomas Hood (1799–1845), poet and humorist. From over- + lean. Compare to lean over.