Re grassed, apart from the reference to inform (i.e. grass on) if you drop a catch in e.g. cricket it is said that the catch has been grassed (i.e. fallen to the floor).
If it's any consolation AJT I think that many times, for example, latin words, musical terms, ballet, opera, foreign food (which I do like but can never remember what they are called), mythology, shakespearian characters etc, etc.