Simple past tense and past participle of heave.(verb)
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Use "heaved" in a sentence
"Martin heaved a sigh of relief when the door closed behind the laundryman."
"Her breasts heaved from the exertion, and he marked the pulsating of the shimmering cherry-colored silk with delight as he flung his glance around to the other two girls similarly breathing."
"Martin heaved a sigh of relief when he had disposed of the last manuscript."