Someone who is randy is sexually excited and eager to have sex. It was extremely hot and I was feeling rather randy. = horny. full of sexual desire = horny (randy (17-19 centuries), from rand , an old form of rant)
Randy Mosher, author of The Brewer's Companion: Being a Complete Compendium of Brewing Knowledge Thoughtfully Arranged for the Amateur Brewer Containing Numerous and Diverse Charts, Tables, Graphs &c , as an Aid in the Successful Brewing of Quality Beer which is out of print