Clump/klʌmp/ Definition 1 of 4Pro Tip 1/3Physical Proximity Use 'clump' when things or people are not just close, but touching or overlapping. The mushrooms grew in a tight clump against the tree. Pro Tip 2/3Natural Formation 'Clump' often describes how plants or natural objects group together unplanned. A clump of flowers bloomed wildly in the meadow. Pro Tip 3/3Not Crowded A 'clump' implies a small number, not a large crowd or gathering. They stood in a small clump waiting for the guide.