Definition of groan

• v. i. - To give forth a low, moaning sound in breathing; to utter a groan, as in pain, in sorrow, or in derision; to moan.
• v. i. - To strive after earnestly, as with groans.
• v. t. - To affect by groans.
• n. - A low, moaning sound; usually, a deep, mournful sound uttered in pain or great distress; sometimes, an expression of strong disapprobation; as, the remark was received with groans.