| BIRACIALLY | • biracially adv. In a biracial manner. • BIRACIAL adv. including members of two races. |
| BIRADICALS | • biradicals n. Plural of biradical. • BIRADICAL n. a molecule with two centres. |
| BIRCHBARKS | • birchbarks n. Plural of birchbark. • BIRCHBARK n. the bark of the birch tree. |
| BIRCHWOODS | • birchwoods n. Plural of birchwood. • birch␣woods n. Plural of birch wood. • BIRCHWOOD n. the wood of the birch tree. |
| BIRDBRAINS | • birdbrains n. Plural of birdbrain. • bird␣brains n. Plural of bird brain. • BIRDBRAIN n. one of very limited intelligence. |
| BIRDDOGGED | • bird-dogged v. Simple past tense and past participle of bird-dog. • bird␣dogged v. Simple past tense and past participle of bird dog. • BIRDDOG v. to follow closely. |
| BIRDHOUSES | • birdhouses n. Plural of birdhouse. • BIRDHOUSE n. a nesting-box; an aviary. |
| BIRDLIMING | • birdliming v. Present participle of birdlime. • BIRDLIME v. to smear or catch (as) with birdlime. |
| BIRDSFOOTS | • bird's-foots n. Plural of bird’s-foot. • BIRDSFOOT n. a papilionaceous genus of plants with clawlike pods. |
| BIROSTRATE | • birostrate adj. (Rare) Having two beaks (or beak-like structures). • BIROSTRATE adj. double-beaked. |
| BIRTHDATES | • birthdates n. Plural of birthdate. • birth␣dates n. Plural of birth date. • BIRTHDATE n. the date on which a person was born. |
| BIRTHMARKS | • birthmarks n. Plural of birthmark. • BIRTHMARK n. a mark, e.g. a pigmented area or spot, on one's body at birth. |
| BIRTHNAMES | • birthnames n. Plural of birthname. • birth␣names n. Plural of birth name. • BIRTHNAME n. the name given one at birth. |
| BIRTHNIGHT | • birthnight n. The night of someone’s birth. • birthnight n. The anniversary of that night in subsequent years. • BIRTHNIGHT n. the night in which a person is born; the anniversary of that night in succeeding years. |
| BIRTHPLACE | • birthplace n. The location where a person was born. • birthplace n. (By extension) The location where something was created or devised. • BIRTHPLACE n. a place of birth or origin. |
| BIRTHRATES | • birthrates n. Plural of birthrate. • birth␣rates n. Plural of birth rate. • BIRTHRATE n. the proportion of live births to population. |
| BIRTHRIGHT | • birthright n. Something owed since birth, due to inheritance. • BIRTHRIGHT n. a right, privilege, or possession to which a person is entitled by birth. |
| BIRTHROOTS | • birthroots n. Plural of birthroot. • BIRTHROOT n. a herbaceous plant with an astringent rootstock, said to have medicinal properties, also BIRTHWORT. |
| BIRTHSTONE | • birthstone n. Any of twelve gemstones traditionally associated with the month of one’s birth. • birthstone n. Any of a similar list of less costly substitutes. • BIRTHSTONE n. a gemstone associated symbolically with the month of one's birth. |
| BIRTHWORTS | • birthworts n. Plural of birthwort. • BIRTHWORT n. a plant formerly reputed to help parturition, also BIRTHROOT. |