The Collaborative International Dictionary of English v.0.48:

Videlicet \Vi*del"i*cet\, adv. [L., contr. fr. videre licet,
   literally, it is easy to see, one may or can see.]
   To wit; namely; -- often abbreviated to viz.
   [1913 Webster]

WordNet (r) 3.0 (2006):

videlicet
    adv 1: as follows [syn: namely, viz., that is to say, to
           wit, videlicet]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

VIDELICET. A Latin adverb signifying to wit, that is to say, namely,
scilicet. (q.v.) This word is usually, abbreviated Viz.
     2. The office of the videlicet is to mark, that the party does not
undertake to prove the precise circumstances alleged, and in such case he is
not required to prove them. Steph. Pl. 309'; 7 Cowen, R. 42; 4 John. R. 450;
3 T. R. 67, 643; 8 Taunt. 107; Greenl. Ev. Sec. 60; 1 Litt. R. 209. Vide
Yelv. 94; 3 Saund. 291 a, note; New Rep. *465, note; Dane's Ab. Index, h.t.;
2 Pick. 214, 222; 16 Mass. 129.