The Collaborative International Dictionary of English v.0.48:

Throaty \Throat"y\, a.
   Guttural; hoarse; having a guttural voice. "Hard, throaty
   words." --Howell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

throaty
    adj 1: sounding as if pronounced low in the throat; "a rich
           throaty voice"

Moby Thesaurus II by Grady Ward, 1.0:

130 Moby Thesaurus words for "throaty":
   accented, alveolar, apical, apico-alveolar, apico-dental,
   articulated, assimilated, back, barytone, bilabial, blurred,
   brassy, brazen, breathy, broad, cacuminal, central, cerebral,
   checked, choked, choking, close, coarse, consonant, consonantal,
   continuant, cracked, croaking, croaky, dental, dissimilated,
   dorsal, drawling, drawly, dry, dysphonic, flat, front, glide,
   glossal, glottal, gruff, guttural, hard, harsh, harsh-sounding,
   hawking, heavy, high, hoarse, husky, inarticulate, indistinct,
   intonated, labial, labiodental, labiovelar, lateral, lax, light,
   lingual, liquid, lisping, low, metallic, mid, mispronounced,
   monophthongal, muted, muzzy, narrow, nasal, nasalized, occlusive,
   open, oxytone, palatal, palatalized, pharyngeal, pharyngealized,
   phonemic, phonetic, phonic, pitch, pitched, posttonic, quavering,
   ragged, raucid, raucous, retroflex, rough, rounded, roupy, rude,
   semivowel, shaking, shaky, snuffling, soft, sonant, squawking,
   squawky, stertorous, stifled, stopped, strangled, stressed, strong,
   surd, syllabic, tense, thick, tinny, tonal, tonic, tremulous,
   twangy, unaccented, unrounded, unstressed, velar, vocalic, vocoid,
   voiced, voiceless, vowel, vowellike, weak, wide