electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
spinning wheel
Noun
a small domestic spinning machine with a single spindle that is driven by hand or foot
spy satellite
Noun
a satellite with sensors to detect nuclear explosions
sombrero
Noun
a straw hat with a tall crown and broad brim
sparkplug wrench
Noun
a wrench for removing or tightening spark plugs into the cylinder head of an internal combustion engine
spiral bandage
Noun
an oblique bandage in which successive turns overlap preceding turns
squad room
Noun
a room in a barracks where soldiers are billeted
squad room
Noun
a room in a police station where members of the force assemble for roll call and duty assignments
sonar
Noun
a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return
spark transmitter
Noun
an early radio transmitter using a discharge across a spark gap as the source of its power
spiral ratchet screwdriver
Noun
a screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle
spatula
Noun
a hand tool with a thin flexible blade used to mix or spread soft substances
spatula
Noun
a turner with a narrow flexible blade
square knot
Noun
a double knot made of two half hitches and used to join the ends of two cords
square nut
Noun
nut with a square shape
speakeasy
Noun
(during prohibition) an illegal barroom
spiral spring
Noun
a spring that is wound like a spiral
square-rigger
Noun
a square-rigged sailing ship
sonic depth finder
Noun
depth finder for determining depth of water or a submerged object by means of ultrasound waves
speakerphone
Noun
a telephone with a microphone and loudspeaker
spirit lamp
Noun
a lamp that burns a volatile liquid fuel such as alcohol
square sail
Noun
a four-sided sail set beneath a horizontal yard suspended at the middle from a mast
speaking trumpet
Noun
a trumpet-shaped acoustic device to intensify and direct the human voice
spirit stove
Noun
a stove that burns a volatile liquid fuel such as alcohol
squash ball
Noun
rubber ball used in playing squash
sonogram
Noun
an image of a structure that is produced by reflections of high-frequency sound waves, also known as ultrasonography
speaking tube
Noun
a tube for conveying the sound of a voice from one room to another
spirogram
Noun
a recording of breathing made with a spirograph
squash court
Noun
the indoor court in which squash is played
spear
Noun
a long pointed rod used as a tool or weapon
spear
Noun
an implement with a shaft and barbed point used for catching fish
spear
Verb
pierce with a spear
spear
Verb
thrust up like a spear
spirograph
Noun
a measuring instrument for recording the depth and rapidity of breathing movements
squash racket
Noun
a small racket with a long handle used for playing squash
sonograph
Noun
an instrument that uses the differential transmission and reflection of ultrasonic waves in order to provide an image of a bodily organ
spirometer
Noun
a measuring instrument for measuring the vital capacity of the lungs
squash racquet
Noun
a small racket with a long handle used for playing squash
soothing syrup
Noun
medicine in the form of a syrup that has a calming effect
spittoon
Noun
a receptacle for spit (usually in a public place)
squawk box
Noun
the loudspeaker on an intercom or public address system
sorter
Noun
a machine for sorting things (such as punched cards or letters) into classes
sorter
Noun
a clerk who sorts things (as letters at the post office)
squawker
Noun
the loudspeaker on an intercom or public address system
squawker
Noun
a person given to excessive complaints and crying and whining
spearhead
Noun
the head and sharpened point of a spear
spearhead
Noun
the leading military unit in an attack
spearhead
Noun
someone who leads or initiates an activity (attack or campaign etc.)