IPA: //ˈrɒzɪni//
KK: /ˈrɒzɪni/
Having qualities similar to rosin, which is a solid form of resin obtained from pine trees and used in various applications.
The musician preferred a rosin-like grip on his bow for better sound production.
The word 'rosiny' comes from 'rosin' (from Old French *rosine*, meaning a solid form of resin) and the suffix '-y' (meaning characterized by). Thus, 'rosiny' describes something that is characterized by or resembles rosin, which is a sticky substance derived from pine trees.
Think of 'rosin' as a sticky substance from trees, and remember that 'rosiny' means something that has the characteristics of rosin.