blubber (n.) Look up blubber at Dictionary.com
late 14c., blober "a bubble, bubbling water; foaming waves," probably echoic of bubbling water. Original notion of "bubbling, foaming" survives in the figurative verbal meaning "to weep, cry" (c. 1400). Meaning "whale fat" first attested 1660s; earlier it was used in reference to jellyfish (c. 1600) and of whale oil (mid-15c.). Compare bubble.
blubber (v.) Look up blubber at Dictionary.com
"to cry, to overflow with weeping" (usually disparaging), c. 1400, from blubber (n.). In Middle English also "to seethe, bubble" (late 14c.). Related: Blubbered; blubbering.