From The Collaborative International Dictionary of English v.0.44 [gcide]:
Entitle \En*ti"tle\, verb (used with an object) [imp. & p. p. {Entitled}; p. pr. & vb. n. {Entitling}.] [OF. entituler, F. intituler, LL. intitulare, fr. L. in + titulus title. See {Title}, and cf. {Intitule}.]
1. To give a title to; to affix to as a name or appellation; hence, also, to dignify by an honorary designation; to denominate; to call; as, to entitle a book ''Commentaries;'' to entitle a man ''Honorable.''
That which . . . we entitle patience. --Shak.
2. To give a claim to; to qualify for, with a direct object of the person, and a remote object of the thing; to furnish with grounds for seeking or claiming with success; as, an officer's talents entitle him to command.
3. To attribute; to ascribe. [Obs.]
The ancient proverb . . . entitles this work . . . peculiarly to God himself. --Milton.
Syn: To name; designate; style; characterize; empower; qualify; enable; fit.
From WordNet (r) 2.0 [wn]:
verb
1: give the right to; "The Freedom of Information Act entitles you to request your FBI file"
2: give a title to [syn: {title}]
3: give a title to someone; make someone a member of the nobility [syn: {ennoble}, {gentle}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
41 Moby Thesaurus words for "entitle": allow, authorize, baptize, call, certificate, certify, charter, christen, define, denominate, designate, dub, empower, enable, enfranchise, fit, franchise, give official sanction, give power, identify, label, legalize, legitimize, let, license, name, nickname, nominate, patent, permit, privilege, qualify, ratify, sanction, specify, style, tag, term, title, validate, warrant