tick
noun (1)Definition of tick
(Entry 1 of 5)
tick
verb
ticked;
ticking;
ticks
Definition of tick (Entry 2 of 5)
1
: to make the sound of a tick or a series of ticks
2
: to operate as a functioning mechanism : run
tried to understand what made him tick the motor was ticking over quietly
tick
noun (2)Definition of tick (Entry 3 of 5)
1
: any of a superfamily (Ixodoidea) of bloodsucking acarid arachnids that are larger than the related mites, attach themselves to warm-blooded vertebrates to feed, and include important vectors of infectious diseases
2
: any of various usually wingless parasitic dipteran flies — compare sheep ked
tick
noun (3)Definition of tick (Entry 4 of 5)
1
: the fabric case of a mattress, pillow, or bolster
also
: a mattress consisting of a tick and its filling
2
: ticking entry 1
tick
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