Walk up Definition 1 of 4Pro Tip 1/3Physical Movement Refers to the action of moving towards someone or something on foot. If you walk up quietly, you might see the birds without scaring them away. Pro Tip 2/3Start Conversation Often used when initiating a conversation or interaction. Walk up to the host and introduce yourself at the party. Pro Tip 3/3Contextual Distance Implies a short distance to be covered on foot without much effort. You can walk up to the farmer's market; it's pretty close.