As a verb jit is
(computing|transitive) to compile (program code for a virtual machine) immediately when needed, as part of the execution process.
As a noun jit is
an inexperienced, foolhardy young man or jit can be a style of zimbabwean dance music (as the bhundu boys) played with drums and guitar.
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Not English
Wikidiffcom has no English definition. It may be misspelled. jit
Noun
(
en-initialism)
(operations)
(computing, of bytecode optimizations)
Verb
(
en verb)
(computing, of bytecode optimizations) to perform an operation (usually compiling) Just-In-Time