sob

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To weep aloud with convulsive gasping; cry uncontrollably. See Synonyms at cry.
2. v. To make a sound resembling that of loud weeping.
3. v. To utter with sobs.
4. v. To put or bring (oneself) into a specified condition by sobbing: sob oneself to sleep.
5. n. The act or sound of sobbing.

Century Dictionary and Cyclopedia

1. To sigh strongly with a sudden heaving of the breast or a kind of convulsive motion; weep with convulsive catchings of the breath.
2. To make a sound resembling a sob.
3. To give forth or utter with sobs; particularly, to say with sobbing.
4. In lute-playing, to deaden the tone of by damping the string, or relaxing the finger by which it is stopped.
5. n. A convulsive heaving of the breast and inspiration of breath, under the impulse of painful emotion, and accompanied with weeping; a strong or convulsive sigh. It consists of a short, convulsive, somewhat noisy respiratory movement.
6. n. A sound resembling the sobbing of a human being.
7. To sup; suck up.
8. To sop; soak with a liquid.
9. To frighten.

Wiktionary

1. n. a cry with a short, sudden expulsion of breath.
2. v. intransitive to weep with convulsive gasps.
3. v. transitive to say (something) while sobbing.

GNU Webster's 1913

1. v. obsolete To soak.
2. v. To sigh with a sudden heaving of the breast, or with a kind of convulsive motion; to sigh with tears, and with a convulsive drawing in of the breath.
3. n. The act of sobbing; a convulsive sigh, or inspiration of the breath, as in sorrow.
4. n. Any sorrowful cry or sound.

WordNet 3.0

1. v. weep convulsively
2. n. insulting terms of address for people who are stupid or irritating or ridiculous
3. n. a dyspneic condition
4. n. convulsive gasp made while weeping