- n. 大头钉；方针（tack的复数形式）
- v. 用平头钉钉住；附加；改变政策（tack的第三人称单数形式）
- n.
- the heading or position of a vessel relative to the trim of its sails
- a short nail with a sharp point and a large head
- gear for a horse
同义词： stable gear saddlery
- (nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind
同义词： sheet mainsheet weather sheet shroud
- (nautical) the act of changing tack
同义词： tacking
- sailing a zigzag course
- v.
- fasten with tacks
"tack the notice on the board"
- turn into the wind
"The sailors decided to tack the boat"; " The boat tacked"
同义词： wear round
- create by putting components or members together
"He tacked together some verses"
同义词： assemble piece put together set up tack together
- sew together loosely, with large stitches
同义词： baste
- fix to; attach
同义词： append tag on tack on hang on
- reverse (a direction, attitude, or course of action)
同义词： interchange switch alternate flip flip-flop
- fasten with tacks