③
沉重的;繁重的(负担、任务压得重)
相关 形容词理据由「物重」喻「担重」——难负荷的任务、负担像重物压身(a heavy responsibility「沉重责任」)。
例句
The army was defeated with heavy losses.这支军队惨败,损失惨重;由物之沉重喻担子与损失之重(相关·比喻),heavy 即沈重、惨重的。She had a heavy workload.她的工作量很重;同此——繁重难当。
溯源路径本义 → 义项3