(grammar): noun case used to indicate means. It answers the question "how?", and in English, this is usually expressed by the prepositional phrase by means of, as in "by means of the house". Languages that use the instructive case include Finnish and (rarely) Estonian.

(typography, uncountable) The distinction between majuscule (uppercase) and minuscule (lowercase) letters. / (countable) A case used for carrying written letters.

(grammar) Noun case used to denote companionship. In English, this is usually expressed by the prepositional phrase in company with, together with or with, as in "with the house." Languages that use the comitative case include Estonian, Finnish, Hungarian, Inari Sami, Northern Sami, Skolt Sami, and Quechua. It is also found in many Australian Aboriginal languages, where it is commonly used to form names of places and languages.

A box-style briefcase, scrunched over a hinged frame that opens into two compartments.

(engineering) In drilling, a bull-nose shaped device attached to the bottom of the casing string. A casing hanger, which allows the casing to be suspended from the wellhead, is also attached to the top of the casing.

(grammar) case to express ability, intention, necessity, obligation, permission, possibility, etc.

(grammar) A declension, in some languages, of a noun or pronoun that has the basic meaning of "by way of".

An object purposed to contain different stationery like pencil, rubber, correction fluid, etc.

(grammar) A form of declension that indicates at what point something ends.

(programming) The characteristic of being case sensitive; having different reactions to typed letters based on whether the letters are uppercase or lowercase.