Noun

• S: (n) tack (tack%1:15:00::) (the heading or position of a vessel relative to the trim of its sails)
• S: (n) tack (tack%1:06:00::) (a short nail with a sharp point and a large head)
• S: (n) stable gear (stable_gear%1:06:00::), saddlery (saddlery%1:06:00::), tack (tack%1:06:01::) (gear for a horse)
• S: (n) sheet (sheet%1:06:02::), tack (tack%1:06:02::), mainsheet (mainsheet%1:06:00::), weather sheet (weather_sheet%1:06:00::), shroud (shroud%1:06:01::) ((nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind)
• S: (n) tack (tack%1:04:01::), tacking (tacking%1:04:00::) ((nautical) the act of changing tack)
• S: (n) tack (tack%1:04:00::) (sailing a zigzag course)

Verb

• S: (v) tack (tack%2:35:00::) (fasten with tacks) "tack the notice on the board"
• S: (v) tack (tack%2:38:00::), wear round (wear_round%2:38:00::) (turn into the wind) "The sailors decided to tack the boat"; "The boat tacked"
• S: (v) assemble (assemble%2:36:00::), piece (piece%2:36:00::), put together (put_together%2:36:00::), set up (set_up%2:36:00::), tack (tack%2:36:05::), tack together (tack_together%2:36:00::) (create by putting components or members together) "She pieced a quilt"; "He tacked together some verses"; "They set up a committee"
• S: (v) baste (baste%2:35:00::), tack (tack%2:35:05::) (sew together loosely, with large stitches) "baste a hem"
• S: (v) append (append%2:35:00::), tag on (tag_on%2:35:00::), tack on (tack_on%2:35:00::), tack (tack%2:35:06::), hang on (hang_on%2:35:00::) (fix to; attach) "append a charm to the necklace"
• S: (v) interchange (interchange%2:30:00::), tack (tack%2:30:02::), switch (switch%2:30:00::), alternate (alternate%2:30:02::), flip (flip%2:30:00::), flip-flop (flip-flop%2:30:00::) (reverse (a direction, attitude, or course of action))