And/ənd,ən,n/ Definition 1 of 4Pro Tip 1/3List Connection Use 'and' to link items in a list, showing that each item is included. For picnic, we packed sandwiches, apples, and water. Pro Tip 2/3Equal Importance 'And' implies that connected ideas or actions have equal significance. She dances and sings during the show. Pro Tip 3/3Compound Sentences Combine two related sentences with 'and' to make a compound sentence. The sun set, and the stars appeared.