spear 1. n. 1. A weapon consisting of a long shaft with a sharply pointed end. 2. A shaft with a sharp point and barbs for spearing fish. 3. A soldier armed with a spear.v. speared, spear·ing, spears. v. tr. 1. To pierce with a spear or other sharp object. 2. To catch with a thrust of the arm: spear a grounder. 3. a. Football To block (an opponent) by ramming with the helmet, in violation of the rules.b. Sports To jab (an opponent) with the blade of a hockey stick, in violation of the rules. v. intr.. To pierce with a spear or other sharp object. 2. To catch with a thrust of the arm: spear a grounder. 3. a. Football To block (an opponent) by ramming with the helmet, in violation of the rules. b. Sports To jab (an opponent) with the blade of a hockey stick, in violation of the rules.