SUL'TRY, adjective 1. Very hot, burning and oppressive; as Libya's sultry deserts. 2. Very hot and moist, or hot, close, stagnant and unelastic; as air or the atmosphere. A sultry air is usually enfeebling and oppressive to the human body. Such as born beneath the burning sky And sultry sun, betwixt the tropics lie.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI