tight

The tight end (TE) is an offensive position in American football, arena football, and Canadian football. It is a hybrid that combines the characteristics and roles of both an offensive lineman and a receiver. Like offensive linemen, they are usually lined up on the offensive line and are large enough to be effective blockers. On the other hand, unlike offensive linemen, they are eligible receivers and potent weapons in team's offensive schemes.
The tight end's role in any given offense depends on the preferences and philosophy of the head coach, offensive coordinator, and overall team dynamic. In some systems, the tight end will merely act as a sixth offensive lineman, rarely going out for passes. Other systems use the tight end primarily as a receiver, frequently taking advantage of the tight end's size to create mismatches in the defensive secondary. Many coaches will often have one tight end who specializes in blocking on running plays while using a tight end with better pass-catching skills in obvious passing situations.
Offensive formations may have as few as zero or as many as three tight ends at one time.

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