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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. 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, bring together, 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