Where does “cocherón” come from?

cocherón (Spanish) comes from Spanish cochera, from Spanish coche, from Middle French coche, from German Kutsche, from French couché, from French coucher, from Middle French coucher, from Old French couchier — whale, sea monster; abyss.

Ancestry of “cocherón”, step by step

Step	Language	Word	Meaning
1	Spanish	cochera	carport parking structure with roof
2	Spanish	coche	car; carriage, coach
3	Middle French	coche	—
4	German	Kutsche	carriage; coach; A large, old automobile in poor...
5	French	couché	past participle of coucher; in bed
6	French	coucher	to lay, to lay down; to put to bed, to put up; to...
7	Middle French	coucher	to put to bed; setting
8	Old French	couchier	to go to bed; to have sex; bedtime
9	Latin	collocō	to place, put, set in order, assign, arrange
10	Latin	cōn-	Used in compounds to indicate a being or bringing together of several objects
11	Latin	cum	with, along with; at; -fold
12	Old Latin	com	Alternative form of cum
13	Proto-Italic	kom	with, along, at
14	Proto-Indo-European	ḱóm	beside, near, by, with
15	Proto-Indo-European	ḱe	Deictic particle, here; Post-positional...
16	Middle English	kyt	—
17	Russian	кит	whale; genitive plural of ки́та
18	Old Church Slavonic	китъ	whale
19	Ancient Greek	κῆτος	whale, sea monster; abyss

Every word from Ancient Greek κῆτος →Every word from Latin cōn- →Every word from Old Church Slavonic китъ →