String"er (?), n.
1.
One who strings; one who makes or provides strings, especially for bows.
Be content to put your trust in honest stringers.
Ascham.
2.
A libertine; a wencher.
[Obs.]
Beau. & Fl.
3. Railroad
A longitudinal sleeper.
4. Shipbuilding
A streak of planking carried round the inside of a vessel on the under side of the beams.
5. Carp.
A long horizontal timber to connect uprights in a frame, or to support a floor or the like.
© Webster 1913.