What is the meaning of Quin?

A quintuplet.

A European scallop, Pecten opercularis, used as food.

which, what

what a

(surprise, giving someone something) alternative form of tiens

whom (plural) (object)

how come not, why don't I/you/he ..., how about? (in questioning suggestions)

come on, let's, ...then! (adding force)

Used to corroborate or amplify the previous statement: and even, and in fact

1. Strengthened by various adverbs:

   Strengthened by various adverbs:

   Used to emphasise an objection to the previous statement: why, but ...!

   who does/can/would not

   without (something happening), (so) that...not

   not because not...but, not that not...but

   from doing or happening

   that

   Used other than figuratively or idiomatically: see quī,‎ -ne.

   which

   what

   what

   Source: wiktionary.org