casement

name

Etymology: Reduced Anglicized form of Irish Mac Asmuint (“son of Asmund”), a personal name derived from Old Norse Asmundr, which is composed by the elements áss (“god”) + mundr (“protection”).

1. A surname from Irish.

noun

1. A window sash that is hinged on the side.

   “For at the window of my house I looked through my casement, and beheld among the simple ones, I discerned among the youths, a young man void of understanding.”

2. A window having such sashes; a casement window.ᵂᵖ

   “Passing through Tokenhouse Yard, in Lothbury, of a sudden a casement violently opened just over my head, and a woman gave three frightful screeches, and then cried, ‘Oh! death, death, death!’ in a most inimitable tone, and which struck me with horror and a chillness in my very blood.”

   “Some slight noise had awakened Francesca, and opening her casement, she looked through the thick and misty air, and saw him riding slowly over the heath.”

3. A casemate. Some writers and readers consider casement a catachresis when used in this sense.