teem1 / tēm/ • v. [intr.] (teem with) be full of or swarming with: every garden is teeming with wildlife | [as adj.] (teeming) she walked briskly through the teeming streets. teem2 • v. [intr.] (of water, esp. rain) pour down; fall heavily: with the rain teeming down at the manor, Italy seemed a long way off.