noun
plural tacks
[count] a small, sharp nail usually with a wide, flat head
b 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]
[count] :a loose stitch that is used to hold pieces of cloth together before sewing them tightly together - compare 3tack
get down to brass tacks
verb
tacks; tacked; tacking
always followed by an adverb or preposition [+ obj] :to fasten or attach (something) with tacks
[+ obj] :to add on or attach (something) in a quick or careless way - usually + on or onto
[no obj] sailing :to turn a ship or boat so that the wind is coming at it from the opposite side
noun
[noncount] :the equipment (such as a saddle and a bridle) that is used for riding a horse - compare 1tack