What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
1Of or relating to ants. Now rare.
2Frequently in form Myrmidonian. Of or relating to the Myrmidons of Homer's Iliad; designating or resembling a Myrmidon.
Late 16th century; earliest use found in Thomas Moffett (1553–1604), physician and naturalist. From myrmidon + -ian.