Galena, Illinois. Galena is the largest city in and the county seat of Jo Daviess County, Illinois, with a population of 3,429 at the 2010 census. A 581-acre (235 ha) section of the city is listed on the National Register of Historic Places as the Galena Historic District.
noun. Influence from members of oneâs peer group: his behaviour was affected by drink and peer pressure. More example sentences. 1  At the age of twelve I was influenced by peer pressure and started to drink cider which is a popular drink among young people as it is cheap and strong.
Full Definition of PRESSURE. 1. a: the burden of physical or mental distress b: the constraint of circumstance: the weight of social or economic imposition. 2. : the application of force to something by something else in direct contact with it: compression. 3. archaic: impression, stamp.4.edical Definition of PRESSURE. 1. : the burden of mental or physical distress especially from grief, illness, or adversity. 2. : the application of force to something by something else in direct contact with it: compression. 3.