Definition of tiddler
1
British
: a small fish (such as a stickleback or minnow)
- Children paddle and fish for tiddlers near the riverside church at Loose in Kent.
- —Stuart Verrells
2
British, informal
: a small person or thing
- IBM, the world's biggest computer maker, has signed alliances with nearly 20 tiddlers to try to combine their innovation with its own prowess in marketing and customer service.
- —The Economist
