To happen to see; to notice or catch sight of someone or something — typically used for accidental or casual sightings.
昨日、駅前で大学の同級生を見かけたよ。
I happened to see a university classmate in front of the station yesterday.
この店では珍しい品物をよく見かける。
You often see rare items at this shop.
赤い帽子をかぶった子を公園で見かけましたか？
Did you see a child wearing a red hat in the park?
彼は最近元気そうに見かけるが、本当のところは分からない。
He seems to be doing well lately when I see him, but I don't really know the truth.