[no obj., with adverbial]stand, move, or sit in a lazy, drooping way
没精打采地站（或动、坐）
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he slouched against the wall 他没精打采地靠在墙上
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(
be slouched )he was slouched in his chair .他懒洋洋地坐在椅子上。
[with obj.]
〈旧〉 把（帽）檐一边拉下。
a lazy, drooping posture or movement
懒散（或无力）的姿态（或动作）
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his stance was a round-shouldered slouch. 他拱背曲肩，一副懒散的姿态。
[usu. with negative]
〈非 正式〉 无能的人
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my brother was no slouch at making a buck. 我兄弟在赚钱的方面可是个好手。
a downward bend of a hat brim
帽檐下垂。
"early 16th cent. （in the sense ‘lazy, slovenly person’）： of unknown origin.