Where does “seahound” come from?

seahound (English) comes from English sea, from Middle English see, from Old English sǣ, from Proto-West Germanic saiwi, from Proto-Germanic saiwiz, from Proto-Germanic sīhwaną, from Proto-Indo-European seykʷ-, from Proto-Indo-European sey- — to be wet; dribble; run; to stretch one's arm;...

Ancestry of “seahound”, step by step

seahound traces back through two separate lines of ancestry.

via English sea

StepLanguageWordMeaning
1EnglishseaA large body of salt water; A lake, especially if...
2Middle Englishseesea, ocean; A body of water, a lake; seat, chair
3Old Englishsea, lake
4Proto-West Germanicsaiwisea
5Proto-Germanicsaiwizsea, ocean
6Proto-Germanicsīhwanąto filter
7Proto-Indo-Europeanseykʷ-to moisten; to filter
8Proto-Indo-Europeansey-to be wet; dribble; run; to stretch one's arm;...

via English hound

StepLanguageWordMeaning
1EnglishhoundA dog, particularly a breed with a good sense of...
2Middle Englishhounddog, hound; A strong term of abuse, especially...
3Old Englishhunddog; hundred
4Proto-West Germanichunddog
5Proto-Germanichundazdog
6Proto-Indo-Europeanḱwn̥tós
7Proto-Indo-Europeanḱwṓdog
Every word from Proto-Indo-European sey-Every word from Proto-Indo-European seykʷ-Every word from Proto-Germanic sīhwaną