The Collaborative International Dictionary of English v.0.48:

Recto \Rec"to\, n. [Cf. F. recto.] (Print.)
   The right-hand page; -- opposed to verso.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Recto- \Rec"to-\ (r?k"t?*).
   A combining form indicating connection with, or relation to,
   the rectum; as, recto-vesical.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Recto \Rec"to\, n. [Abbrev. fr. LL. breve de recto. See
   Right.] (Law)
   A writ of right.
   [1913 Webster]

WordNet (r) 3.0 (2006):

recto
    n 1: right-hand page [ant: verso]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "recto":
   Epistle side, acknowledgments, back, back matter, bastard title,
   bibliography, catch line, catchword, colophon, conservative,
   contents, contents page, copyright page, decanal side, dedication,
   endleaf, endpaper, endsheet, errata, flyleaf, folio, fore edge,
   foreword, front matter, half-title page, head, imprint, index,
   inscription, introduction, leaf, makeup, page, preface,
   preliminaries, reactionary, reverso, right, right field,
   right hand, right side, right wing, right-winger, running title,
   signature, starboard, starboard tack, subtitle, table of contents,
   tail, text, title, title page, trim size, type page, verso



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

RECTO. Right. (q.v.) Brevederecto, writ of right. (q.v.)