Enter a clue or pattern or both:
The Clue
It comes out of a pen (3 letter answer)
The Answer
INK
Tags
Notes
The answer INK is seen frequently, appearing about once every 90 puzzles.
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India, for one
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Publicity
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Atramentous fluid
Bic filler
Calligrapher's buy
Calligrapher's need
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Cuttlefish's output
Kind of pad
Lithographer's need
Octopus defense
Pen filler
Pen's partner
Press coverage
Printer's need
Printer's purchase
Printing item
Quill's need
Quill fluid
Sign, as a deal
Squid's defense
Squid's projection
Squid's squirt
Tattooist's supply
Well contents
Charles Schulz's need
Hard-to-erase stuff
It's kept in a pen
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Publicity, so to speak
Red or black follower
Rorschach test stuff
Squids squirt it
It might be disappearing
What a quill may be dipped in
Definition
INK as a noun:
1. a liquid used for printing or writing or drawing
2. dark protective fluid ejected into the water by cuttlefish and other cephalopods
INK as a verb:
1. append one's signature to; "They inked the contract"
2. fill with ink; "ink a pen"