ichidan verb / transitive:

• to squeeze (to the utmost); to wring out
• to squeeze (money) out of someone; to wring (money) from
• to scold; to criticize severely; to lay into
• to train ruthlessly; to give punishing training
• to strain (one's voice)
• to gather up (a curtain)

adverb:

• anywhere; for all time; to the ends of the earth
• through thick and thin; come hell or high water; to the bitter end; to the utmost
• persistently; stubbornly
• in all respects; on every point
• thoroughly; exhaustively

noun:

• (courteous) invitation; call

~する noun:

• to invite (with the utmost courtesy, e.g. an expert or professor to give a lecture)