v. To cause or allow to take milk at the breast or udder; nurse.v. To take milk at the breast or udder of.v. To take in as sustenance; have as nourishment.v. To nourish as if with the milk of the breast; nurture: "a pagan suckled in a creed outworn” ( William Wordsworth). verb-intransitive. To suck at the breast or udder.