piston

1. Walter Hamor 1894–1976 Am. composer.

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1. A solid cylinder or disk that fits snugly into a larger cylinder and moves under fluid pressure, as in a reciprocating engine, or displaces or compresses fluids, as in pumps and compressors.

2. Music A valve mechanism in brass instruments for altering the pitch.

3. A sliding piece moved by or moving against fluid pressure which usually consists of a short cylindrical body fitting within a cylindrical chamber or vessel along which it moves back and forth.

4. A sliding valve moving in a cylinder in a brass instrument which when depressed by a finger knob serves to lower the instrument's pitch.

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Top Words by points	Points	Word Game
spinto	8	Scrabble

2 Letters	Scrabble® Points
is	2
to	2
ti	2
si	2
so	2
po	4
pi	4
in	2
os	2
op	4
on	2
oi	2
no	2
it	2

3 Letters	Scrabble® Points
ion	3
not	3
psi	5
pst	5
sot	3
sop	5
son	3
sit	3
sip	5
sin	3
pot	5
ins	3
tin	3
tip	5
tis	3
ton	3
top	5
poi	5
pit	5
pos	5
pis	5
pin	5
its	3
nos	3
nit	3
opt	5
ops	5
ons	3
nip	5

4 Letters	Scrabble® Points
spin	6
snot	4
stop	6
snit	4
spit	6
spot	6
snip	6
tips	6
into	4
ions	4
nips	6
nits	4
opts	6
pins	6
pint	6
pion	6
piso	6
pits	6
pois	6
pons	6
post	6
pots	6
tops	6
topi	6
tons	4
tins	4

5 Letters	Scrabble® Points
topis	7
inspo	7
posit	7
point	7
piton	7
pions	7
pints	7
pinto	7
pinot	7
opsin	7

6 Letters	Scrabble® Points
spinto	8
postin	8
points	8
pitons	8
piston	8
pintos	8
pinots	8