noun:

• thumbing (in boxing, poking a thumb in one's opponent's eye)

noun:

• effect; virtue; efficacy; impression
• one's dominant eye ［利き目・きき眼・利目］

expression / intransitive verb / godan ~る verb:

• to be on one's mind; to worry one; to care about; to be bothered by; to feel uneasy; to be anxious; to be curious about
• to feel like; to feel inclined to
• to fancy; to like; to catch one's eye

adverb / ~と adverb / ~する noun:

• thundering; purring; grumbling (e.g. stomach) - onomatopoeia
• something large and heavy starting to roll - onomatopoeia
• scattered about; common; commonplace; all over - onomatopoeia
• idleness; idling about - onomatopoeia
• having a foreign substance in (e.g. one's eye or stomach) - onomatopoeia

noun:

• thunder - children's language - onomatopoeia

noun:

• resin
• (tobacco) resin; tar; nicotine
• sleep (in one's eyes, i.e. eye mucus)

godan ~く verb / transitive:

• to tear; to rip up ［裂く］
• to cut up; to cleave; to cut open (esp. the abdomen)
• to forcibly separate (e.g. two lovers) ［裂く］
• to spare (time, money, etc.); to use part of something ［割く］
• to have a tattoo in the corner of one's eye - archaism ➜ 黥く