Tra từ tack - Từ điển Oxford Advanced Learner 8th

tack [tack tacks tacked tacking] noun, verb BrE [tæk] NAmE [tæk]
noun
1. uncountable, singular the way in which you deal with a particular situation; the direction of your words or thoughts
•a complete change of tack
•It was a brave decision to change tack in the middle of the project.
•When threats failed, she decided to try/take a different tack.
•His thoughts wandered off on another tack.
•I find gentle persuasion is the best tack.
2. countable, uncountable (technical)the direction that a boat with sails takes as it sails at an angle to the wind in order to fill its sails
•They were sailing on (a) port/starboard tack (= with the wind coming from the left/right side).
3. countable a small nail with a sharp point and a flat head, used especially for fixing a carpet to the floor
•a carpet tack
compare ↑nail _n. (²)
4. countable (NAmE) = ↑thumbtack
see also Blu-tack
5. countable a long loose ↑stitch used for holding pieces of cloth together temporarily, before you sew them finally
6. uncountable (technical)the equipment that you need for riding a horse, such as a ↑saddle and ↑bridle
•a tack room (= the room where this equipment is kept)
see (get down to) brass tacks at ↑brass

Word Origin:
n. senses 1 to 5 and v. Middle English ‘something that fastens one thing to another’ Old French tache ‘clasp, large nail’ n. sense 6 late 18th cent. ‘apparatus, equipment’ ↑tackle

Example Bank:
•New research is taking a different tack.
•She suddenly changed tack, taking him by surprise.
•The interviewer decided to try another tack.
•The yacht swung to the opposite tack.
•We were sailing on starboard tack.
•It was a brave decision to change tack half-way through the project.
•This represented a complete change of tack.
•When threats failed she tried a different tack.
Derived: ↑tack something on ▪ ↑tack something onto something

verb
1. transitive ~ sth + adv./prep. to fasten sth in place with a ↑tack or ↑tacks
Syn: ↑nail
•The carpet was tacked to the floor.
2. transitive ~ sth (+ adv./prep.) to fasten pieces of cloth together temporarily with long loose stitches before sewing them finally
•She tacked the sleeve of the blouse into the armhole.
3. intransitive (technical)to change the direction of a sailing boat so that the wind blows onto the sails from the opposite side; to do this several times in order to travel in the direction that the wind is coming from
Verb forms:

Word Origin:
n. senses 1 to 5 and v. Middle English ‘something that fastens one thing to another’ Old French tache ‘clasp, large nail’ n. sense 6 late 18th cent. ‘apparatus, equipment’ ↑tackle

Example Bank:
•A poster was tacked to the wall with drawing pins.
•He tacked the carpet down.
•She tacked the hem up and then tried the dress on.
•She tacked the ribbon onto the shirt.
•The skirt was roughly tacked together.