Reference meaning
opa
Last updated
Grandfather, grandpa.
Other meanings
2. noun
Abbreviation of optionally piloted aircraft.
3. noun
Initialism of offensive patent aggregation.
Source and scope
This definition is reproduced from English Wiktionary, sense en-opa-en-noun-1oBo6hvo, under the CC BY-SA 4.0. It has not yet received VocabularyBase editorial review. Read the source and license details.