Jun2u,
The meaning of the word "knew" has many variations in the Hebrew. Keeping in line with how the word "knew" is being applied in Gen. 1:17, it is generally understood to be the act of sexual intercourse.
As to what else one wants to do with the word "knew", it's quite evident from the following, that anyone can fabricate what they want.
However, from your perspective, it causes me to understand the word " foreknowledge" better than I do.
Word: RCI
Pronounce:
yaw-dah'
Strong:
H3045
Orig: a primitive root; to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially (including observation, care, recognition; and causatively, instruction, designation, punishment, etc.) (as follow):--acknowledge, acquaintance(-ted with), advise, answer, appoint, assuredly, be aware, (un-)awares, can(-not), certainly, comprehend, consider, X could they, cunning, declare, be diligent, (can, cause to) discern, discover, endued with, familiar friend, famous, feel, can have, be (ig-)norant, instruct, kinsfolk, kinsman, (cause to let, make) know, (come to give, have, take) knowledge, have (knowledge), (be, make, make to be, make self) known, + be learned, + lie by man, mark, perceive, privy to, X prognosticator, regard, have respect, skilful, shew, can (man of) skill, be sure, of a surety, teach, (can) tell, understand, have (understanding), X will be, wist, wit, wot.
Use: TWOT-848 Verb
Grk Strong:
G143 G144 G191 G312 G319 G322 G518G611 G1097 G1107 G1109 G1110 G1166 G1213 G1231G1263 G1291 G1321 G1492 G1717 G1718 G1804 G1921G1983 G1987 G1990 G2816 G3129 G3627 G3835 G4337G4591 G4908 G4920 G4982 G5214 G5318 G5384
1) to know
1a) (Qal)
1a1) to know
1a1a) to know, learn to know
1a1b) to perceive
1a1c) to perceive and see, find out and discern
1a1d) to discriminate, distinguish
1a1e) to know by experience
1a1f) to recognise, admit, acknowledge, confess
1a1g) to consider
1a2) to know, be acquainted with
1a3) to know (a person carnally)
1a4) to know how, be skilful in
1a5) to have knowledge, be wise
1b) (Niphal)
1b1) to be made known, be or become known, be revealed
1b2) to make oneself known
1b3) to be perceived
1b4) to be instructed
1c) (Piel) to cause to know
1d) (Poal) to cause to know
1e) (Pual)
1e1) to be known
1e2) known, one known, acquaintance (participle)
1f) (Hiphil) to make known, declare
1g) (Hophal) to be made known
1h) (Hithpael) to make oneself known, reveal oneself