n. 25B6; noun
a metal spike : PRONG, barb, point; skewer, stake, spit; tine, pin; spur; Mountaineering piton.
the spikes of a cactus : THORN, spine, prickle, bristle; Zoology spicule.
25B6; verb
she spiked an oyster : IMPALE, spear, skewer; pierce, penetrate, perforate, stab, stick, transfix; poetic/literary transpierce.
(informal) his drink was spiked with drugs : ADULTERATE, contaminate, drug, lace; informal dope, doctor, cut.