noun

1. any undesired, uncultivated plant, esp. one growing in profusion so as to crowd out a desired crop, disfigure a lawn, etc.
2. Informal
   1. tobacco: with the
   2. a cigar or cigarette
   3. marijuana
3. something useless; specif., a horse that is unfit for racing or breeding

Etymology: ME weede < OE weod, akin to LowG wēd: base only in WGmc

transitive verb

1. to remove the weeds from (a garden, lawn, etc.)
2. to remove (a weed): often with out
3. to remove as useless, harmful, etc.: often with out
4. to rid of elements regarded as useless, harmful, etc.

intransitive verb