pianos is a form of:

Battel



ENGLISH MEANING
noun
1.
A single combat; as, trial by battel.
2.
Provisions ordered from the buttery; also, the charges for them; -- only in the pl., except when used adjectively.
adjective
1.
Fertile; fruitful; productive.
verb
1.
(INTRANSITIVE) To make fertile.
2.
(INTRANSITIVE) To be supplied with provisions from the buttery.