| nod | | |
| n. (communication) | 1. nod | a sign of assent or salutation or command. |
| ~ motion, gesture | the use of movements (especially of the hands) to communicate familiar or prearranged signals. |
| n. (act) | 2. nod | the act of nodding the head. |
| ~ inclining, inclination | the act of inclining; bending forward.; "an inclination of his head indicated his agreement" |
| ~ nutation | uncontrolled nodding. |
| v. (communication) | 3. nod | express or signify by nodding.; "He nodded his approval" |
| ~ gesticulate, gesture, motion | show, express or direct through movement.; "He gestured his desire to leave" |
| v. (communication) | 4. nod | lower and raise the head, as to indicate assent or agreement or confirmation.; "The teacher nodded when the student gave the right answer" |
| ~ communicate, intercommunicate | transmit thoughts or feelings.; "He communicated his anxieties to the psychiatrist" |
| v. (body) | 5. nod | let the head fall forward through drowsiness.; "The old man was nodding in his chair" |
| v. (motion) | 6. nod | sway gently back and forth, as in a nodding motion.; "the flowers were nodding in the breeze" |
| ~ move | move so as to change position, perform a nontranslational motion.; "He moved his hand slightly to the right" |
| v. (body) | 7. nod | be almost asleep.; "The old man sat nodding by the fireplace" |
| ~ drowse | be on the verge of sleeping.; "The students were drowsing in the 8 AM class" |
| cog | | |
| n. (person) | 1. cog | a subordinate who performs an important but routine function.; "he was a small cog in a large machine" |
| ~ subordinate, subsidiary, underling, foot soldier | an assistant subject to the authority or control of another. |
| n. (artifact) | 2. cog, sprocket | tooth on the rim of gear wheel. |
| ~ cogwheel, gear, gear wheel, geared wheel | a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion. |
| ~ tooth | something resembling the tooth of an animal. |
| v. (contact) | 3. cog | roll steel ingots. |
| ~ roll out, roll | flatten or spread with a roller.; "roll out the paper" |
| v. (contact) | 4. cog | join pieces of wood with cogs. |
| ~ bring together, join | cause to become joined or linked.; "join these two parts so that they fit together" |
| cuspid | | |
| n. (body) | 1. canine, canine tooth, cuspid, dogtooth, eye tooth, eyetooth | one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars. |
| ~ fang | canine tooth of a carnivorous animal; used to seize and tear its prey. |
| ~ tooth | hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense. |
| tusk | | |
| n. (substance) | 1. ivory, tusk | a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses. |
| ~ tusk | a long pointed tooth specialized for fighting or digging; especially in an elephant or walrus or hog. |
| ~ dentin, dentine | a calcareous material harder and denser than bone that comprises the bulk of a tooth. |
| n. (animal) | 2. tusk | a long pointed tooth specialized for fighting or digging; especially in an elephant or walrus or hog. |
| ~ tusker | any mammal with prominent tusks (especially an elephant or wild boar). |
| ~ boar, sus scrofa, wild boar | Old World wild swine having a narrow body and prominent tusks from which most domestic swine come; introduced in United States. |
| ~ elephant | five-toed pachyderm. |
| ~ tooth | hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense. |
| ~ ivory, tusk | a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses. |
| v. (contact) | 3. horn, tusk | stab or pierce with a horn or tusk.; "the rhino horned the explorer" |
| ~ pierce, thrust | penetrate or cut through with a sharp instrument. |
| v. (change) | 4. detusk, tusk | remove the tusks of animals.; "tusk an elephant" |
| ~ remove, take away, withdraw, take | remove something concrete, as by lifting, pushing, or taking off, or remove something abstract.; "remove a threat"; "remove a wrapper"; "Remove the dirty dishes from the table"; "take the gun from your pocket"; "This machine withdraws heat from the environment" |
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