(heraldry, UK) An escutcheon used to display the arms of the bearer's wife; not commonly used unless she is an heiress.

(mathematical analysis) The supremum (least upper bound) of a function which holds almost everywhere. In symbols, ess sup f= inf M:𝜇(x:f(x)>M)=0

(mathematical analysis) The infimum (greatest lower bound) of a function which holds almost everywhere. In symbols, ess inf f= sup m:𝜇(x:f(x)<m)=0.

A fire escape.

(apiculture) A panel having holes or mesh allowing bees to be removed from a hive before honey is harvested.

(especially in British English) Alternative form of counterespionage

(medicine, chiefly uncountable) A neurological condition that causes rhythmic shaking of unknown cause in one or more parts of the body during voluntary movements.

A Japanese school offering education from elementary or middle-school level (or even from the kindergarten) up to the start of university.

plural of escalator school

(slang, sometimes derogatory) Men who have had sexual intercourse with the same woman.