The gear emoji is ⚙️: the character U+2699, in Unicode since version 4.1, followed by U+FE0F. Unicode notes it as technology, tools, and no other emoji is filed under gear, cog or cogwheel in CLDR, Unicode’s list of search words.
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The gear symbol as text
With the text selector U+FE0E after it, the same character is a gear text symbol: one colour, the colour of your text. Unicode has two more gears that are not emoji, both map symbols added in version 5.2: ⛭ Gear without hub, noted as factory, and ⛮ Gear with handles, noted as power plant.
Gear, as in equipment
By Wiktionary the first sense of gear is equipment, especially that used for an athletic endeavor. CLDR files nothing under equipment, so an equipment emoji is whatever the kit is: 🎒, ⛺, 🎣, 🎿. The combos spell out camping, fishing, ski and safety gear.
Questions and answers
What does the gear emoji mean?
Machinery, and how a thing works. By Wiktionary a gear is a wheel with teeth, such that two can interlock and pass motion from one to another, and a cog is a tooth on a gear, or the gear itself.
Is there a gear Alt code?
By Wikipedia some apps take a decimal number from 256 to 65,535 after Alt, which makes Alt+9881 a gear. In others, type 2699 and press Alt+X. The old Alt codes have no gear icon: the nearest shape in code page 437 is Alt+15, ☼.
Is there a gear symbol on a keyboard?
No key types one, and Unicode has no gear emoticon of its own. Built from plain keys, {o} is a small gear and {o}{O}{o} a gear train.
Is ⚙️ the gear icon emoji?
Yes: it is the one gear in the emoji list, printed between 🔩 Nut and bolt and 🗜️ Clamp. For a gear icon to copy and paste without colour, take ⚙︎ or ⛭.
All 71 items
Gear symbols 8
❂Circled open centre eight pointed starU+2742. Not a gear by name: a stand-in here for a gear with a rim.
⚙️GearU+2699 U+FE0F. U+2699 has been in Unicode since version 4.1, noted as technology, tools. The only emoji filed under gear, cog and cogwheel. Emoji 1.0.
⛮Gear with handlesU+26EE. A map symbol, in Unicode since version 5.2, noted as power plant, power substation. Not an emoji.
⛭Gear without hubU+26ED. A map symbol, in Unicode since version 5.2, noted as factory. Not an emoji.
⚙︎Gear, text styleU+2699. The same character with the text selector, U+FE0E: one colour, the colour of your text.
齒Teeth and cogs, Han characterU+9F52. A Han character. Unihan defines it as teeth; gears, cogs; age; Kangxi radical 211.
輪Wheel, Han characterU+8F2A. A Han character. Unihan defines it as wheel; revolve, turn; recur.
☼White sun with raysU+263C. Not a gear by name: a stand-in here. Code page 437 has it at 15, so the old Alt+15 types it.
Show all 71 items (63 more)
Machine emoji 12
🚲BicycleU+1F6B2. Filed under bike, cycle and spin. Emoji 0.6.
⛓️ChainsU+26D3 U+FE0F. Filed under chain and chains. Emoji 0.7.
🗜️ClampU+1F5DC U+FE0F. The emoji after Gear in Unicode’s list. Filed under clamp, vice and tool. Emoji 0.7.
🎛️Control knobsU+1F39B U+FE0F. Unicode notes it as audio control. Filed under control and knobs. Emoji 0.7.
🏭FactoryU+1F3ED. Filed under factory and building. Emoji 0.6.
🎚️Level sliderU+1F39A U+FE0F. Unicode notes it as level control. Filed under level and slider. Emoji 0.7.
🦾Mechanical armU+1F9BE. Filed under mechanical and arm. Emoji 12.0.
🔩Nut and boltU+1F529. The emoji before Gear in Unicode’s list. Filed under nut, bolt and tool. Emoji 0.6.
🤖RobotU+1F916. Filed under robot. Emoji 1.0.
🧰ToolboxU+1F9F0. Filed under toolbox, mechanic and tool. Emoji 11.0.
🛞WheelU+1F6DE. Filed under wheel, turn and tire. Emoji 14.0.
🔧WrenchU+1F527. Filed under wrench, spanner and tool. Emoji 0.6.
Equipment emoji 12
🎒BackpackU+1F392. Filed under backpack, rucksack and backpacking. Emoji 0.6.
🧭CompassU+1F9ED. Filed under compass and navigation. Emoji 11.0.
🤿Diving maskU+1F93F. Filed under diving, scuba and snorkeling. Emoji 12.0.
🎣Fishing poleU+1F3A3. Filed under fishing and pole. Emoji 0.6.
🔦FlashlightU+1F526. Filed under flashlight, torch and tool. Emoji 0.6.
🧤GlovesU+1F9E4. Filed under gloves. Emoji 5.0.
🥽GogglesU+1F97D. Filed under goggles, protection and swimming. Emoji 11.0.
🥾Hiking bootU+1F97E. Filed under hiking, camping and outdoors. Emoji 11.0.
⛑️Rescue worker’s helmetU+26D1 U+FE0F. Filed under helmet and rescue. Emoji 0.7.
🦺Safety vestU+1F9BA. Filed under safety and vest. Emoji 12.0.
🎿SkisU+1F3BF. Filed under ski and snow. Emoji 0.6.
⛺TentU+26FA. Filed under camping and tent. Emoji 0.6.
Gear emoticons 5
{(o)}A gear with a rim. Plain ASCII
{o}A small gear: a hub between two braces. Plain ASCII