(of an animal, especially a dog)make a low guttural sound of hostility in the throat
（动物，尤指狗）发出狺狺声，（自喉咙处）发敌意的低吠声
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the dogs yapped and growled about his heels .狗在他脚边时而狂吠时而低吠。
[with direct speech](of a person)say something in a low grating voice, typically in a threatening manner
（人）低声咆哮着说，恶狠狠地威胁
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‘
Keep out of this,’ he growled .“别插手此事，”他恶狠狠地威胁道。
(of a thing)make a low or harsh rumbling sound, typically one that is felt to be threatening
（事物）发轰隆声
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thunder growls without warning from a summer sky .夏日的天空中突然雷声隆隆。
a low guttural sound made in the throat, especially by a dog
（尤指狗发出的）狺狺声，低吠。
a similar sound made by a person, especially to express hostility or anger
（人发出的）低沉的怒吼；咆哮。
[in sing.]a low throaty sound made by a machine or engine
（机器或引擎发出的）轰隆声
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the growl of diesel engines .柴油机引擎的轰隆声。
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growlv.发出狺狺声；发敌意的低吠声；低声咆哮着说；恶狠狠地威胁；发轰隆声
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growv.生长；成长；发育；增大；发展；增加；逐渐变得；变得越来越；种植；形成
" mid 17th cent.: probably imitative．"