secondhand

Multiple Entries:
  second hand    second-hand  

Concise Oxford English Dictionary © 2008 Oxford University Press:
second hand

▶noun an extra hand in some watches and clocks which moves round to indicate the seconds.

Concise Oxford English Dictionary © 2008 Oxford University Press:
second-hand

▶adjective & adverb

• 1 (of goods) having had a previous owner; not new.

• 2 accepted on another's authority and not from original investigation.

– phrases
at second hand by hearsay rather than direct observation or experience.