verb

make a deep inarticulate sound conveying pain, despair, pleasure, etc.

Marty groaned and pulled the blanket over his head

moan,murmur,whine,whimper,mewl,bleat,sigh,wail,howl,sob,cry,call out

noun

a deep inarticulate sound conveying pain, despair, pleasure, etc.

she lay back with a groan

moan,murmur,whine,whimper,mewl,bleat,sigh,wail,howl,sob,cry,lamentation