The story
- German · calque ofSchweinehund
- English todaypig dog
In Sense 2, a calque of German Schweinehund. Taj Burrow offers two (perhaps fanciful) explanations for Sense 3: that surfers tend to assume a dog-like expression when in this stance (page 119) or that the stance is low and sturdy like a dog (glossary page 171).
Words from the same roots
GermanSchweinehund all →
Etymology from Wiktionary, CC BY-SA 4.0.