runt /ɹʌnt/noun 9forms 1phrases 1 noun9 •The smallest animal of a litter. •The smallest child in the family. •Undersized or stunted plant, animal or person. •(slang) An uninfluential or unimportant person; a nobody. •An Ethernet packet that does not meet the medium's minimum packet size of 64 bytes. •A breed of pigeon related to the carrier pigeon. •A single word (or portion of a hyphenated word) that appears as the last line of a paragraph. •A bow. •(dialect, no longer used) A hardened stem or stalk of a plant.Neither young poles nor old runts are durable — 1601 formsrunts Phrases with runt runt of the litterThe smallest and weakest person in a group, especially a group of siblings.