A person who is sexually attracted to plants. A person who would rather go on a date with a pot of geraniums than with another human. Someone who is turned on by the physical qualties of certain plants. Used jokingly as an insult and/or swear word
Look at Megan flirting with that palm tree over there! Damn, that girl is such as coss!
Did you hear that Joe took a daffodil out to dinner last night? What a coss!