Word: keystone
Part of speech: Verb
Syllables: key
stone
Definition: To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
Morphemes:
Affix: key
Language: en
PoS: Verb
Meaning: To modify (an advertisement) so as to target a particular group or demographic.
Affix: stone
Language: en
PoS: Verb
Meaning: To lap with an abrasive stone to remove surface irregularities.