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1. A loose temporary sewing stitch to hold layers of fabric together
   - baste, basting, basting stitch
    
2. (nautical) the act of changing tack
   - tack
    
3. Sailing a zigzag course

1. Fasten with tacks
   "tack the notice on the board"
    
2. (boat) turn into the wind
   "The sailors decided to tack the boat"; "The boat tacked";
   - wear round
    
3. Create by putting components or members together
   "He tacked together some verses";
   - assemble, piece, put together, set up, tack together
    
4. Sew together loosely, with large stitches
   "tack a hem";
   - baste
    
5. Fix to; attach
   - append, tag on, tack on, hang on
    
6. Reverse (a direction, attitude, or course of action)
   - interchange, switch, alternate, flip, flip-flop

Derived forms: tackings

Type of: attach, change by reversal, change of course, create, embroidery stitch, fasten, fix, join, make, reverse, run up, sail, sailing, secure, sew, sew together, sewing stitch, stitch, stitch up, turn

Encyclopedia: Tacking