| A | B |
| bodily adj. | Corporeal |
| boisterous adj. | Unchecked merriment or animal spirits |
| bole n. | The trunk or body of a tree |
| bolero n. | A Spanish dance, illustrative of the passion of love, accompanied by caste nets and singing. |
| boll n. | A round pod or seed-capsule, as a flax or cotton |
| bolster v. | To support, as something wrong |
| bomb n. | A hollow projectile containing an explosive material. |
| bombard v. | To assail with any missile or with abusive speech. |
| bombardier n. | A person who has charge of mortars, bombs, and shells |
| bombast n. | Inflated or extravagant language, especially on unimportant subjects |
| boorish adj. | Rude. |
| bore v. | To weary by tediousness or dullness |
| borough n. | An incorporated village or town |
| bosom n. | The breast or upper front of the thorax of a human being, especially of a woman. |
| botanical adj. | Connected with the study or cultivation of plants. |
| botanize v. | To study plant-life |
| botany n. | The science that treats of plants |
| bountiful adj. | Showing abundance |
| Bowdlerize v. | To expurgate in editing (a literary composition) by omitting words or passages. |
| bowler n. | In cricket, the player who delivers the ball. |
| boycott v. | To place the products or merchandise of under a ban. |
| brae n. | Hillside |
| braggart n. | A vain boaster |
| brandish v. | To wave, shake, or flourish triumphantly or defiantly, as a sword or spear. |
| bravado n. | An aggressive display of boldness. |
| bravo interj. | Well done |
| bray n. | A loud harsh sound, as the cry of an ass or the blast of a horn. |
| braze v. | To make of or ornament with brass |
| brazier n. | An open pan or basin for holding live coals. |
| breach n. | The violation of official duty, lawful right, or a legal obligation. |
| breaker n. | One who trains horses, dogs, etc. |
| breech n. | The buttocks. |
| brethren n.pl. | Members of a brotherhood, gild, profession, association, or the like. |
| brevity n. | Shortness of duration |
| bric-a-brac n. | Objects of curiosity or for decoration |
| bridle n. | The head-harness of a horse consisting of a head-stall, a bit and the reins. |
| brigade n. | A body of troops consisting of two or more regiments |
| brigadier n. | General officer who commands a brigade, ranking beween a colonel and a major-general |
| brigand n. | One who lives by robbery and plunder. |
| brimstone n. | Sulfur |
| brine n. | Water saturated with salt |
| bristle n. | One of the coarse, stiff hairs of swine: used in brush-making, etc. |
| Britannia n. | The United Kingdom of Great Britain |
| Briticism n. | A word, idiom, or phrase characteristic of Great Britain or the British. |
| brittle adj. | Fragile |
| broach v. | To mention, for the first time. |
| broadcast adj. | Disseminated far and wide. |
| brogan n. | A coarse, heavy shoe. |
| brogue n. | Any dialectic pronunciation of English, especially that of the Irish people |
| brokerage n. | The business of making sales and purchases for a commission; a broker |
| bromine n. | A dark reddish-brown non-metallic liquid element with a suffocating odor |
| bronchitis n. | Inflammation of the bronchial tubes |
| bronchus n. | Either of the two subdivisions of the trachea conveying air into the lungs |