scriptPubKey

Trezor Wiki/Glossary/Development/Cryptography standards and elements/ ScriptPubKey

A scriptPubKey is an ouput transaction script. It defines a condition that must be met to spend funds commited to the output in question.

See also: scriptSig

To understand how transactions work on basic technical level, check blog post Types of Bitcoin transactions: Part I, Part 2. More detailed description can be found in Bitcoin Wiki or in Bitcoin.org Developer guide.