Is it "I could care less" or "I couldn't care less"?
"sprinkle liquid in drops," 1520s, from Middle Dutch sprayen, from Proto-Germanic *spræwjanan (cf. German sprühen "to sparkle, drizzle," Spreu "chaff," literally "that which flies about"), from PIE root *sper- "to sow, scatter" (see sprout (v.)). The noun is attested from 1620s. Spray-painting is from 1902; spray-paint (v.) is from 1928.
"small branch," c.1300, possibly related to Old English spræc "shoot, twig" (see sprig).
A fine jet of liquid discharged from a pressurized container. v. sprayed, spray·ing, sprays
To disperse a liquid in a jet of droplets.
A Unix command that sends packets to a host and reports performance statistics. The number of packets, delay between packets and packet length can all be specified. The spray command uses the Remote Procedure Call (RPC) protocol to send a one-way stream of packets to the sprayd daemon on the given host. With the "-i" option, spray uses the Internet Control Message Protocol (ICMP) instead of RPC. Normally these will be echoed automatically, creating a return stream.
Unix manual page: spray(1M).