Beard - The “moustache,” the beard of the upper lip. The fact related in this verse tends to clear Mephibosheth from the suspicion of unfaithfulness to David.
Related Commentaries of 2 Samuel 19:24
2 Samuel 19:24
24 And Mephibosheth the son of Saul came down to meet the king, and had neither dressed his feet, nor trimmed his beard, nor washed his clothes, from the day the king departed until the day he came again in peace.