A contrivance (sordine), as in a pianoforte, to deaden vibrations; or, as in other pieces of mechanism, to check some action at a particular time.
A device that decreases the oscillations of a system.
A shock absorber.
A valve or movable plate in the flue or other part of a stove, furnace, etc., used to check or regulate the draught of air.
Bread made from a basic recipe of flour, water, milk, and salt, but without yeast.
Something that kills the mood.
The upper limit of a sequence of real numbers is the real number which can be found as follows: remove the first term of the sequence in order to obtain the "first subsequence." Then remove the first term of the first subsequence in order to obtain the "second subsequence." Repeat the removal of first terms in order to obtain a "third subsequence," "fourth subsequence," etc. Find the supremum of each of these subsequences, then find the infimum of all of these supremums. This infimum is the upper limit.