pinions
Teeth meet rack
Pinions are the outermost flight feathers of a bird's wing.
To pinion someone is to restrain them by binding or holding their arms: Guards pinioned him against the wall.
The image transfers from clipping a bird's wing feathers to prevent flight.
Separately, a pinion is a small gear that meshes with a larger one, as in rack-and-pinion steering.
Fasten or obligate
- immobilizeStop all motion
- shackleMetal limb restraint
- tieEqual score, or neckwear
- fetterAnkle chain for prisoners
truss · disable · clip · confine · incapacitate · hobble · secure · tether
Feather used for writing
- plumageBird's complete feather coat
- flight feathersBird's main wing plumes
- barbsSharp points or jibes
- shaftNarrow vertical passage
vane · coverts · down · molting · preen · keratin · fletching · contour
Projections enabling mechanical engagement
- cogwheelToothed rotating machine part
- rackFrame for holding items
- meshingInterlocking in coordination
- drivetrainVehicle power transmission system
sprocket · escapement · clockwork · ratchet · worm gear · spur gear · helical · transmission
bind
Fasten or obligate
- immobilizeStop all motion
- shackleMetal limb restraint
- tieEqual score, or neckwear
fetter · truss · disable · clip · confine · incapacitate · hobble · secure · tether · hold fast
quill
Feather used for writing
- plumageBird's complete feather coat
- flight feathersBird's main wing plumes
- barbsSharp points or jibes
shaft · vane · coverts · down · molting · preen · keratin · fletching · contour · afterfeather
gear teeth
Projections enabling mechanical engagement
drivetrain · sprocket · escapement · clockwork · ratchet · worm gear · spur gear · helical · transmission · torque
- watchmakingloupe, chronograph, tweezers, screwdriver, perpetual calendar
- clockworksmainspring, escapement, pendulum, gears, balance wheel
- drive componentsgears, shafts, bearings, pulleys, belts
- mothsmoth, moths, luna moth, atlas moth, hawk moth
pinionsfetters
Ankle restraints, often metal
chains · shackles · restraints · groundedness · weights
pinionsrack
Frame for holding items
crown wheel · ring gear · gear wheel · main gear · spur gear
- rack and pinionToothed bar and gear