an extra hand in some watches and clocks that moves round to indicate the seconds
(of goods) having had a previous owner; not new
a second-hand car
(of information or experience) accepted on another's authority and not from original investigation
second-hand knowledge of her country
on the basis that something has had a previous owner
tips on the pitfalls to avoid when buying second-hand
on the basis of what others have said; indirectly
I was discounting anything I heard second-hand