(idiomatic) A statement that no excuses will be made, that the speaker is going to take direct responsibility for matters, rather than pass the responsibility to higher authorities.

A species of plantain with toothed or divided leaves (Plantago coronopus).

(slang) Charles Shaw wine, a brand of inexpensive wine.

plural of buck's horn plantain

plural of Boas-Buck polynomial

(mathematics) Any member of the sequence of polynomials Φₙ⁽ʳ⁾(x) given by generating functions of the form displaystyle C(ztʳB(t))=∑_(n>0)𝛷ₙ⁽ʳ⁾(z)tⁿ.

(idiomatic) To return to something that previously caused harm.

The skin of a male deer, a buck. / Clothing made from buckskin. / Breeches made of buckskin. / A grayish yellow in colour.

Of a grayish yellow in colour.

(chiefly US) Lead shot used in shotgun cartridges, made of larger pellets than birdshot and suitable for hunting larger game. [from 18th c.]