Definition of Have a go

Babylon English Dictionary
make an attempt, make an effort, try
Search Dictionary
Have a go Definition from Language, Idioms & Slang Dictionaries & Glossaries
ENGLISH IDIOMS 2.EDITION
try to do, attempt You have a go at this puzzle. See if you can solve it.
English Idioms WM 1.3a
try to do, attempt
You have a go at this puzzle. See if you can solve it.
WordNet 2.0

Verb
1. make an attempt at something; "I never sat on a horse before but I'll give it a go"
(synonym) give it a try
(hypernym) try, seek, attempt, essay, assay