Definition of on someone's tail
- The sheriff was hot on their tails.
: some person : somebody
: the rear end or a process or prolongation of the rear end of the body of an animal
: something resembling an animal's tail in shape or position: such as
: a luminous stream of particles, gases, or ions extending from a comet especially in the antisolar direction
: to follow for purposes of surveillance
: to connect end to end
: to remove the tail of (an animal) : dock
: limited as to tenure : entailed
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