weed
noun /wiːd/
  /wiːd/
Idioms - [countable] a wild plant growing where it is not wanted, especially among crops or garden plants- The yard was overgrown with weeds.
- Routine maintenance of the garden consists of keeping weeds under control.
- There were weeds pushing up through the gravel.
 Oxford Collocations Dictionaryadjective- annual
- perennial
- aquatic
- …
 - kill
- clear
- get rid of
- …
 - grow
- spread
- spring up
- …
 - control
- killer
- trimmer
- …
 
- [uncountable] any wild plant without flowers that grows in water and forms a green floating massTopics Plants and treesc1                                     
- the weed[singular] (humorous) tobacco or cigarettes- I wish I could give up the weed (= stop smoking).
 
- [uncountable] (informal) the drug cannabisTopics Social issuesc2
- [countable] (British English, informal, disapproving) a person with a weak character or body- Don’t be such a weed!
 
Word OriginOld English wēod (noun), wēodian (verb), of unknown origin; related to Dutch wieden (verb).
Idioms 
in the weeds (North American English, informal)
- with more problems, work or commitments than you can manage - The bartender was alone and in the weeds, so we had to wait twenty minutes to order.
 
- too concerned with the details of something- I don't want to get too deep in the weeds here, but here's the short version:…