To come over is to visit somebody at their home. Round to theirs, informally.
It is the standard invitation in British English, so asking somebody to come over for supper is warm and casual. Drop by and pop round do much the same. There are two other senses: a feeling can come over you, as in a wave of tiredness, and coming over as something means giving an impression, which overlaps with come across. Coming over all funny is a British way of describing a sudden odd feeling.
1phrasecome overTo visit someone's home.
“Why not come over at the weekend?”
2phrasefeelingOf a feeling, to affect someone suddenly.
“A great weariness will come over you afterwards.”
Also accepted in games: drop by
Practised in Phrasal Verbs, A Man Called Ove
First appears in chapter 20 of A Man Called Ove.
Practise this word