Definition of rosin in English:


nounPlural rosins

mass noun
  • Resin, especially the solid amber residue obtained after the distillation of crude turpentine oleoresin, or of naphtha extract from pine stumps. It is used in adhesives, varnishes, and inks and for treating the bows of stringed instruments.

    ‘they will also supply crushed colophony rosin’
    as modifier ‘liquid rosin flux’
    • ‘The hair must be tensioned and be rubbed with rosin or a similar compound to grip the string.’
    • ‘Linoleum, made from all-natural materials including linseed oil and pine rosin, is a low-cost and maintenance-free choice.’
    • ‘Marina was only half-listening as she took Shell's rosin box and ran the hard, translucent, amber colored rosin along the hairs.’
    • ‘In the aquatint process, areas covered by rosin powder become pitted when immersed in an acid bath.’
    • ‘He began to put away his cello, wiping large deposits of white powdery rosin from the strings and bow with a silky cloth.’

verbrosined, rosining, rosins

[with object]
  • Rub (something, especially a violin bow or string) with rosin.

    ‘island musicians are rosining their bows’
    • ‘The harp is played by pulling down the length of a string with rosined gloves.’
    • ‘For the adventurous players, home made bows of rosined string or even fishing line will suffice.’
    • ‘As Shelley talked happily about the viola player and rosining her bow, Marina plucked the strings softly - A, D, G, up to E - tuning quietly with the fine tuners.’
    • ‘An instrument with strings sounded by a rosined wheel instead of a bow.’
    • ‘Once open she proceeds to pull out the violin and rosin her bow.’


Late Middle English: from medieval Latin rosina, from Latin resina (see resin).