1.refreshments [plural] : drinks and small amounts of food

• Light refreshments will be served/provided at the meeting.
• They provided plenty of liquid refreshments.

2. refreshment [noncount] : food and drink

• The workers were in need of refreshment.
• (humorous) Would you like some liquid refreshment? [=an alcoholic drink]

3. refreshment [noncount] : the process of becoming rested and regaining strength or energy

• We went camping for relaxation and refreshment.