stalk

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To pursue or track (prey) stealthily.
• intransitive verb To follow or observe (a person) persistently, especially out of obsession or derangement.
• intransitive verb To go through (an area) in pursuit of prey or quarry.
• intransitive verb To walk with a stiff, haughty, or angry gait.
• intransitive verb To move threateningly or menacingly.
• intransitive verb To track prey or quarry.
• noun A stem or main axis of a herbaceous plant.
• noun A stem or similar structure that supports a plant part such as a flower, flower cluster, or leaf.
• noun A slender or elongated support or structure, as one that holds up an organ or another body part.

from The Century Dictionary.

• noun The pursuit of game by stealthy approach or under cover.
• noun A high, proud, stately step or walk.
• To walk cautiously or stealthily; steal along; creep.
• To steal up to game under cover of something else; hunt game by approaching stealthily and warily behind a cover.
• To walk with slow, dignified strides; pace in a lofty, imposing manner.
• In sporting, to pursue stealthily, or behind a cover; follow warily for the purpose of killing, as game.
• noun The stem or main axis of a plant; that part of a plant which rises directly from the root, and which usually supports the leaves, flowers, and fruit: as, a stalk of wheat or hemp.
• noun The pedicel of a flower or the peduncle of a flower-cluster (flower-stalk), the petiole of a leaf (leafstalk), the stipe of an ovary, etc., or any similar supporting organ; in mosses, a seta.
• noun A straw.
• noun In architecture, an ornament in the Corinthian capital which resembles the stalk of a plant, and is sometimes fluted. From it the volutes or helices spring. Compare caulis and cauliculus.
• noun One of the upright side-pieces of a ladder, in which the rounds or steps are placed.
• noun The shaft or handle of anything, especially when slender, likened to the stalk of a plant; the stem: as, the stalk of a wine-glass; the stalk of a tobacco-pipe.
• noun In zoology, some part or organ like a stalk; a stem; a stipe.
• noun A tall chimney, as of a furnace, factory, or laboratory.
• noun In founding, an iron rod armed with spikes, used to form the nucleus of a core.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To walk slowly and cautiously; to walk in a stealthy, noiseless manner; -- sometimes used with a reflexive pronoun.
• intransitive verb To walk behind something as a screen, for the purpose of approaching game; to proceed under cover.
• intransitive verb To walk with high and proud steps; -- usually implying the affectation of dignity, and indicating dislike. The word is used, however, especially by the poets, to express dignity of step.
• noun A high, proud, stately step or walk.
• noun The act or process of stalking.
• transitive verb To approach under cover of a screen, or by stealth, for the purpose of killing, as game.
• transitive verb To follow (a person) persistently, with or without attempts to evade detection.
• noun The stem or main axis of a plant
• noun The petiole, pedicel, or peduncle, of a plant.
• noun That which resembles the stalk of a plant, as the stem of a quill.
• noun (Arch.) An ornament in the Corinthian capital resembling the stalk of a plant, from which the volutes and helices spring.
• noun obsolete One of the two upright pieces of a ladder.
• noun A stem or peduncle, as of certain barnacles and crinoids.
• noun The narrow basal portion of the abdomen of a hymenopterous insect.
• noun The peduncle of the eyes of decapod crustaceans.
• noun (Founding) An iron bar with projections inserted in a core to strengthen it; a core arbor.
• noun (Zoöl.) the larva of a noctuid moth (Gortyna nitela), which bores in the stalks of the raspberry, strawberry, tomato, asters, and many other garden plants, often doing much injury.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To approach slowly and quietly in order not to be discovered when getting closer.
• verb To (try to) follow or contact someone constantly, often resulting in harassment (Wikipedia).
• noun A particular episode of trying to follow or contact someone.
• noun A hunt.
• noun The longish piece that supports the seed-carrying parts of a plant.
• verb intransitive To walk haughtily.