tares

A vetch, or the seed of a vetch (genus Vicia, esp. Vicia sativa)

Any of the tufted grasses of genus Lolium; darnel.

A damaging weed growing in fields of grain.

The empty weight of a container; the tare weight or unladen weight.

To take into account the weight of the container, wrapping etc. in weighting merchandise.

To set a zero value on an instrument (usually a balance) that discounts the starting point.