kalem

1. spool; reel; bobbin
   Kupila sam dva kalema crnog konca. — I bought two spools of black thread.
   Na kalemu je ostalo još malo žice. — There's still a little wire left on the reel.
2. (in gardening) graft; scion
   Kalem se dobro primio na staroj jabuci. — The graft took well on the old apple tree.
3. (in electrical engineering) coil
   Pregoreo je kalem u motoru. — The coil in the motor burned out.