The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.
leucins
plural of leucin
• esculin, unclies
Source: Wiktionary
Leu"cin, n. Etym: [Gr. (Physiol. Chem.)
Definition: A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid. (CH3)2CH.CH2.CH(NH2)-COOH. L-leucine, the natural form, is present in most proteins.
Source: Webster’s Unabridged Dictionary 1913 Edition
11 May 2025
(noun) a light drumstick with a rounded head that is used to strike such percussion instruments as chimes, kettledrums, marimbas, glockenspiels, etc.
The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.