Plymothian
/ˌplɪˈməʊðɪən/ /ˌplɪˈmaʊθɪən/ /ˌplɪˈmuːðɪən/(also Plymothean, Plymouthean, Plymouthian)
noun
A native or inhabitant of Plymouth in Devon, or of any of the towns or cities called Plymouth in the United States.
adjective
Of, belonging to, or relating to a town or city called Plymouth or its inhabitants.
Origin
Mid 17th century; earliest use found in Massachusetts. Partly from the name of Plymouth + -ian, and partly from Plymouth, the name of several towns and cities in the United States, especially Plymouth in Massachusetts + -ian. With forms in -ean compare -ean.