v.1. To extinguish a cigarette, cigar, or some other smoking material by stamping the burning end against a surface; stub something out: When the "No Smoking" sign lit up, we snubbed out our cigarettes. I took the cigarette and snubbed it out on the wall before the teacher saw me.
2. Slang To kill someone; murder someone: The gangsters snubbed the witness out. The mobsters snubbed out the competition.
v. To anchor something, such as a vessel, by wrapping a line around a post or cleat: The dock workers took a line and snubbed up the boat. I snubbed the boat up and went ashore. As we came in, one of the crew jumped onto the pier, grabbed a line, and snubbed up.