If you track your shipment and it appears to be on hold at the destination, it may be because the receiver has closed its deliveries at the moment. We will make another delivery attempt when the receiver is again open for deliveries.
It's a capital Q with a dot above representing "heat transfer per unit time" (or rate of heat transfer). Similar thermodynamic symbols are Ẇ (rate of work produced) and ṁ (rate of mass transfer)...and interestingly these DO exist in Unicode.
qin in British English (tʃɪn) noun. a Chinese stringed instrument related to the zither.