σπένδωspéndō

to pour out as a libation, i.e. (figuratively) to devote (one's life or blood, as a sacrifice) ("spend")

Greek (New Testament) · G4689

Meanings

to pour out as a drink-offering, make a libation; passive, figuratively, σπένδομαι, I am poured out or offered as a libation (in the shedding of my life-blood): Philippians 2:17, 2 Timothy 4:6.

Same root

ἄσπονδοςáspondos · G786literally, without libation (which usually accompanied a treaty), i.e. (by implication) truceless

Where it appears

Appears 2 times in the Bible.

Philippians 2:17 But I will rejoice even if I lose my life, pouring it out like a liquid offering to God, just like your faithful service is an offering to God. And I want all of you to share that joy.
2 Timothy 4:6 As for me, my life has already been poured out as an offering to God. The time of my death is near.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.