Sǽ-grund

According to the Old English Dictionary:

(

sǽ-grund

or sǽ (gen.) grund), es; m. The depth of the sea, the bottom of the sea:--Ne mé forswelge sǽgrundes deóp neque obsorbeat me profundum, Ps. Th. 68, 15. Paulus áwrát be him sylfum, ðæt hé ǽnne dæg and áne niht on sǽgrunde ádruge, Homl. Th. ii. 574, 14. Sǽgrunde neáh (cf. ðis fis (the whale) wuneð wið ðe se grund, Misc. 16, 517), Beo. Th. 1133; B. 564. Þurh ðone sǽgrund (profundum maris, cf. tó sǽs grunde, l. 18, and on sǽs grund, Mt. Kmbl. 18, 6) is getácnod hira ende, Past. 2; Swt. 31, 20. Fán Gode besenctun on sǽgrund sigefæstne wer, Menol. Fox 421; Men. 212. Ic styrge wíde sǽgrundas, Exon. Th. 382, 12; Rä. 3, 10: Cd. Th. 196, 9; Exod. 289. sæ-grund