From Wiktionary, the free dictionary
From older -ਆਉ (-āu) / -ਆਵ (-āva), possibly a deverbal of the causative suffix -ਆਉਣਾ (-āuṇā) / -ਆਵਣਾ (-āvaṇā). Compare Hindi -आव (-āv).
-ਆਅ • (-āa) (Shahmukhi spelling ـاء)
- forms abstract nouns from verbs, or nouns referring to someone or something that conforms to the verb's description
- ਦੱਬਣਾ (dabbaṇā, “to press”) + -ਆਅ (-āa) → ਦਬਾਅ (dabāa, “pressing, pressure”)