This is the 2969th most frequent Swedish word.
glöm
"Glöm" means "forget" in English.
In this sentence, 'glöm' is used as a command to remind someone not to forget doing something.
Glöm inte att låsa dörren.
Don't forget to lock the door.
Here, 'glömde' is the past tense of 'glöm', expressing that someone failed to remember something.
Jag glömde mina nycklar hemma.
I forgot my keys at home.
In this example, 'glömma' is in its infinitive form, describing the action of forgetting hypothetically.