( ( ( ( ( ( A watershed ) , ) or ) ( drainage basin ) ) , ) ( ( is ( ( the ( entire ( land area ) ) ) ( that ( ( ( drains ( into ( ( a ( particular body ) ) ( of water ) ) ) ) , ) ( like ( a ( lake ( , ( ( river or ) estuary ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN watershed)) (, ,) (CC or) (NP (JJ drainage) (NN basin)) (, ,)) (VP (VBZ is) (NP (NP (DT the) (JJ entire) (NN land) (NN area)) (SBAR (WHNP (WDT that)) (S (VP (VBZ drains) (PP (IN into) (NP (NP (DT a) (JJ particular) (NN body)) (PP (IN of) (NP (NN water))))) (, ,) (PP (IN like) (NP (DT a) (NN lake) (, ,) (NN river) (CC or) (NN estuary)))))))) (. .)))
A watershed, or drainage basin, is the entire land area that drains into a particular body of water, like a lake, river or estuary.
(ROOT (S (NP (NP (DT All)) (PP (IN of) (NP (NP (DT the) (NN land)) (VP (VBN drained) (PP (IN by) (NP (DT a) (NN river) (NN system))))))) (VP (VBZ is) (VP (VBN called) (NP (NP (PRP$ its) (NN basin)) (, ,) (CC or) (NP (DT the) (`` ``) (JJ wet) ('' '') (NN term) (NN watershed)))))))