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wrapper

A data structure or software that contains ("wraps around") other data or software, so that the contained elements can exist in the newer system. The term is often used with component software, where a wrapper is placed around a legacy routine to make it behave like an object. This is also called "encapsulation" or "wrapper encapsulation," but is not the same as "object encapsulation," a fundamental concept of object technology. See encapsulation and tunneling.

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wrapper

1. the cover, usually of paper or cellophane, in which something is wrapped

2. the ripe firm tobacco leaf forming the outermost portion of a cigar and wound around its body

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(programming)

wrapper - Code which is combined with another piece of code to determine how that code is executed. The wrapper acts as an interface between its caller and the wrapped code. This may be done for compatibility, e.g. if the wrapped code is in a different programming language or uses different calling conventions, or for security, e.g. to prevent the calling program from executing certain functions. The implication is that the wrapped code can only be accessed via the wrapper.