simple past tense and past participle of park
"She parked her car in the lot before going inside."
In plain English: To park something means to leave it stationary in a specific spot so you can go do other things and come back for it later.
"He parked his car in front of the house."
Left somewhere when not in use.
"The cyclist parked his bicycle against the railing while he finished buying coffee."
In plain English: Parked means something is left sitting still and not being used for now, like a car that isn't moving or an idea you are saving to think about later.
"The car was parked in front of our house all morning long."