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tack

1 tack /ˈtæk/ noun
plural tacks
1 tack
/ˈtæk/
noun
plural tacks
Britannica Dictionary definition of TACK
[count]
: a small, sharp nail usually with a wide, flat head
US : thumbtack
sailing
[count, noncount] : the direction that a ship or boat is sailing in as it moves at an angle to the direction of the wind
[count] : a change from one direction to another direction while sailing
[count] : the distance traveled while sailing in a particular direction
: a way in which you do something or try to do something
[singular]
[noncount]
[count] : a loose stitch that is used to hold pieces of cloth together before sewing them tightly together

get down to brass tacks

see brass
compare 3tack
2 tack /ˈtæk/ verb
tacks; tacked; tacking
2 tack
/ˈtæk/
verb
tacks; tacked; tacking
Britannica Dictionary definition of TACK
always followed by an adverb or preposition, [+ object] : to fasten or attach (something) with tacks
[+ object] : to add on or attach (something) in a quick or careless way usually + on or onto
[no object] sailing : to turn a ship or boat so that the wind is coming at it from the opposite side
3 tack /ˈtæk/ noun
3 tack
/ˈtæk/
noun
Britannica Dictionary definition of TACK
[noncount]
: the equipment (such as a saddle and a bridle) that is used for riding a horse
compare 1tack