| Noun | 1. | grounds - your basis for belief or disbelief; knowledge on which to base belief; "the evidence that smoking causes lung cancer is very compelling"information - knowledge acquired through study or experience or instruction probable cause - (law) evidence sufficient to warrant an arrest or search and seizure; "a magistrate determined that there was probable cause to search the house" cogent evidence, proof - any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it" track, trail, lead - evidence pointing to a possible solution; "the police are following a promising lead"; "the trail led straight to the perpetrator" symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease sign - (medicine) any objective evidence of the presence of a disorder or disease; "there were no signs of asphixiation" | |
| 2. | grounds - the enclosed land around a house or other building; "it was a small house with almost no yard"backyard - the grounds in back of a house courtyard, court - a yard wholly or partly surrounded by walls or buildings; "the house was built around an inner court" dooryard - a yard outside the front or rear door of a house front yard - the yard in front of a house; between the house and the street garden - a yard or lawn adjoining a house playground - yard consisting of an outdoor area for children's play side yard - the grounds at either side of a house field - a piece of land cleared of trees and usually enclosed; "he planted a field of wheat" | |
| 3. | grounds - a tract of land cleared for some special purposes (recreation or burial etc.) | |
| 4. | grounds - a justification for something existing or happening; "he had no cause to complain"; "they had good reason to rejoice"justification - a statement in explanation of some action or belief | |
| 5. | grounds - sediment that has settled at the bottom of a liquid | |