couiquer

Couiquer is an extremely rare regional variant of couiner, used in some dialectal French for the same kind of small squeaking or squealing sound. It has essentially no presence in standard modern French.

• Le petit cochon couiquait dans son enclos. — The piglet was squealing in its pen.
• On entendait couiquer quelque chose sous le plancher. — You could hear something squeaking under the floor.
• Le jouet couique quand on appuie dessus. — The toy squeaks when you press it.

This is such a marginal regional variant that couiner is what a learner should actually use and expect to encounter — couiquer is unlikely to appear outside dialectal or very informal regional speech.