1. 
2. 
[syn: secondhand, used]
ADVERB (1)
1.  by indirect means; 
- Example: "I heard about it only secondhand or thirdhand"
- Example: "he prefers to buy secondhand"
The Collaborative International Dictionary of English v.0.48:
Secondhand \Sec"ond*hand`\, a.
   1. Not original or primary; received from another; as,
      secondhand information.
      [1913 Webster +PJC]
            They have but a secondhand or implicit knowledge.
                                                  --Locke.
      [1913 Webster]
   2. Not new; already or previously possessed or used by
      another; as, a secondhand book, garment.
      [1913 Webster]
   At second hand. See Hand, n., 10.
      [1913 Webster]
WordNet (r) 3.0 (2006):
secondhand
    adv 1: by indirect means; "I heard about it only secondhand or
           thirdhand"; "he prefers to buy secondhand"
    adj 1: derived from what is primary or original; not firsthand;
           "a secondhand report"; "a secondhand account of a memory
           of something once read"; "most of our knowledge is
           secondhand"
    2: previously used or owned by another; "bought a secondhand (or
       used) car" [syn: secondhand, used]