Could - Vine's Expository Dictionary of New Testament Words
Could
[ 1,,G2192, echo ]to have," is rendered "could" in Mark 14:8, "she hath done what she could," lit., "she hath done what she had." See HAVE.
[ 2,,G2480, ischuo ]
"to have strength," is translated in Mark 14:37 "couldest thou not." See ABLE.
Notes:
(1) Emblepo in Acts 22:11, lit., "I was not seeing," is translated "I could not see." See BEHOLD.
(2) See CAN, when not used as part of another verb.