To make a groan.
To seemingly creak under the strain of being heavily laden.
A low, mournful sound uttered in pain or grief.
A low, guttural sound uttered in frustration, disapproval, or ecstasy.
A low creaking sound from applied pressure or weight.
to howl loudly or prolongedly in lamentation or joy
to produce a rapid and prolonged series of sharp noises with one's voice.