2.  The close, curt, short, or stopped o; as in not, nor, torrid, dollar, fondle.

3.  The slender or narrow o, like oo; as in prove, move, who, to, do, tomb.

O, in many words, sounds like close or curt u; as in love, shove, son, come, nothing, dost, attorney, gallon, dragon, comfit, comfort, coloration.  One is pronounced wun; and once, wunce.  In the termination on immediately after the accent, o is often sunk into a sound scarcely perceptible, like that of obscure e; as in mason, person, lesson.

DIPHTHONGS BEGINNING WITH O.

Oa, an improper diphthong, has the sound of open or long o; as in boat, coal, roach, coast, coastwise:  except in broad and groat, which have the sound of broad a.

Oe, an improper diphthong, when final, has the sound of open or long o:  as in doe, foe, throe:  except in canoe, shoe, pronounced canoo, shoo. OE, a Latin diphthong, generally sounds like open e; as in Antoeci, foetus:  sometimes, like close or curt e; as in foetid, foeticide.  But the English word f~etid is often, and perhaps generally, written without the o.

Oi is generally a proper diphthong, uniting the sound of close o or broad a, and that of open e; as in boil, coil, soil, rejoice.  But the vowels, when they appear together, sometimes belong to separate syllables; as in Stoic, Stoicism.  Oi unaccented, sometimes has the sound of close or curt i; as in avoirdupois, connoisseur, tortoise.

Oo, an improper diphthong, generally has the slender sound of o; as in coo, too, woo, fool, room.  It has, in some words, a shorter or closer sound, (like that of u in bull,) as in foot, good, wood, stood, wool;—­that of close u in blood and flood;—­and that of open o in door and floor.  Derivatives from any of these, sound as their primitives.

Ou is generally a proper diphthong, uniting the sound of close or curt o, and that of u as heard in bull,—­or u sounded as oo; as in bound, found, sound, ounce, thou.  Ou is also, in certain instances, an improper diphthong; and, as such, it has six different sounds:—­(l.) That of close or curt u; as in rough, tough, young, flourish. (2.) That of broad a; as in ought, bought, thought. (3.) That of open or long o; as in court, dough, four, though. (4.) That of close or curt o; as in cough, trough, lough, shough:  which are, I believe, the only examples. (5.) That of slender o, or oo; as in soup, you, through. (6.) That of u in bull, or of oo shortened; only in would, could, should.