STAPLE n. 2 definitions
The principal commodity of traffic in a market; a principal commodity or production of a country or district; as, wheat, maize, and cotton are great staples of the United States. We should now say, Cotton is the great staple, that is, the established merchandize, of Manchester. Trench.
TARE n.
t or quantity of goods by reason of the weight of the cask, bag, or whatever contains the commodity, and is weighed with it; hence, the allowance or abatement of a certain weight or quantity which the seller makes to the buyer on account of the weight of such cask, bag, etc.