weed 1 Pronunciation (wd)
n.
1.
a. A plant considered undesirable, unattractive, or troublesome, especially one growing where it is not wanted, as in a garden.
b. Rank growth of such plants.
2. A water plant, especially seaweed.
3. The leaves or stems of a plant as distinguished from the seeds: dill weed.
4. Something useless, detrimental, or worthless, especially an animal unfit for breeding.
5. Slang
a. Tobacco.
b. A cigarette.
c. Marijuana.
v. weed·ed, weed·ing, weeds
v.tr.
1. To clear of weeds.
2. To remove (weeds). Often used with out: weed out dandelions.
3. To eliminate as unsuitable or unwanted. Often used with out: weed out unqualified applicants.
v.intr.
To remove weeds.

Shit can be good shit and shit can be bad, or foul.